29775125 has 8 divisors (see below), whose sum is σ = 37159512. Its totient is φ = 23820000.

The previous prime is 29775113. The next prime is 29775127. The reversal of 29775125 is 52157792.

It can be written as a sum of positive squares in 4 ways, for example, as 8031556 + 21743569 = 2834^2 + 4663^2 .

It is not a de Polignac number, because 29775125 - 2²⁴ = 12997909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29775127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118976 + ... + 119225.

It is an arithmetic number, because the mean of its divisors is an integer number (4644939).

Almost surely, 2^29775125 is an apocalyptic number.

29775125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29775125 is a deficient number, since it is larger than the sum of its proper divisors (7384387).

29775125 is an equidigital number, since it uses as much as digits as its factorization.

29775125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238216 (or 238206 counting only the distinct ones).

The product of its digits is 44100, while the sum is 38.

The square root of 29775125 is about 5456.6587762110. The cubic root of 29775125 is about 309.9449260470.

The spelling of 29775125 in words is "twenty-nine million, seven hundred seventy-five thousand, one hundred twenty-five".