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29725 = 522941
BaseRepresentation
bin111010000011101
31111202221
413100131
51422400
6345341
7152443
oct72035
944687
1029725
1120373
1215251
13106b7
14ab93
158c1a
hex741d

29725 has 12 divisors (see below), whose sum is σ = 39060. Its totient is φ = 22400.

The previous prime is 29723. The next prime is 29741. The reversal of 29725 is 52792.

29725 = T30 + T31 + ... + T58.

29725 is nontrivially palindromic in base 4 and base 12.

It can be written as a sum of positive squares in 6 ways, for example, as 4761 + 24964 = 69^2 + 158^2 .

It is not a de Polignac number, because 29725 - 21 = 29723 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 29725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 705 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (3255).

229725 is an apocalyptic number.

29725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29725 is a deficient number, since it is larger than the sum of its proper divisors (9335).

29725 is a wasteful number, since it uses less digits than its factorization.

29725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 75 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 29725 is about 172.4093964957. The cubic root of 29725 is about 30.9770902533.

It can be divided in two parts, 29 and 725, that multiplied together give a square (21025 = 1452).

The spelling of 29725 in words is "twenty-nine thousand, seven hundred twenty-five".

Divisors: 1 5 25 29 41 145 205 725 1025 1189 5945 29725