29520725 has 12 divisors (see below), whose sum is σ = 39421956. Its totient is φ = 21799680.

The previous prime is 29520703. The next prime is 29520739. The reversal of 29520725 is 52702592.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1874161 + 27646564 = 1369^2 + 5258^2 .

It is not a de Polignac number, because 29520725 - 2¹² = 29516629 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29520691 and 29520700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45092 + ... + 45741.

It is an arithmetic number, because the mean of its divisors is an integer number (3285163).

Almost surely, 2^29520725 is an apocalyptic number.

29520725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29520725 is a deficient number, since it is larger than the sum of its proper divisors (9901231).

29520725 is a wasteful number, since it uses less digits than its factorization.

29520725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90856 (or 90851 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 29520725 is about 5433.2978015198. The cubic root of 29520725 is about 309.0596722522.

The spelling of 29520725 in words is "twenty-nine million, five hundred twenty thousand, seven hundred twenty-five".