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29106025 = 52132832
BaseRepresentation
bin110111100000…
…1111101101001
32000202201221221
41233001331221
524422343100
62515502041
7502253134
oct157017551
960681857
1029106025
111547a873
1298b7921
136051100
143c1921b
15284e01a
hex1bc1f69

29106025 has 27 divisors (see below), whose sum is σ = 39557829. Its totient is φ = 21234720.

The previous prime is 29105981. The next prime is 29106029. The reversal of 29106025 is 52060192.

The square root of 29106025 is 5395.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7502121 + 21603904 = 2739^2 + 4648^2 .

It is not a de Polignac number, because 29106025 - 27 = 29105897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29106029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 350634 + ... + 350716.

Almost surely, 229106025 is an apocalyptic number.

29106025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

29106025 is the 5395-th square number.

29106025 is the 2698-th centered octagonal number.

It is an amenable number.

29106025 is a deficient number, since it is larger than the sum of its proper divisors (10451804).

29106025 is an equidigital number, since it uses as much as digits as its factorization.

29106025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The cubic root of 29106025 is about 307.6056437417.

Multiplying 29106025 by its sum of digits (25), we get a square (727650625 = 269752).

29106025 divided by its sum of digits (25) gives a square (1164241 = 10792).

The spelling of 29106025 in words is "twenty-nine million, one hundred six thousand, twenty-five".

Divisors: 1 5 13 25 65 83 169 325 415 845 1079 2075 4225 5395 6889 14027 26975 34445 70135 89557 172225 350675 447785 1164241 2238925 5821205 29106025