39957527225 has 24 divisors (see below), whose sum is σ = 61773302208. Its totient is φ = 24908587200.

The previous prime is 39957527213. The next prime is 39957527249. The reversal of 39957527225 is 52272575993.

It is a happy number.

It is not a de Polignac number, because 39957527225 - 2⁶ = 39957527161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10376654 + ... + 10380503.

It is an arithmetic number, because the mean of its divisors is an integer number (2573887592).

Almost surely, 2^39957527225 is an apocalyptic number.

39957527225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39957527225 is a deficient number, since it is larger than the sum of its proper divisors (21815774983).

39957527225 is a wasteful number, since it uses less digits than its factorization.

39957527225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20757185 (or 20757180 counting only the distinct ones).

The product of its digits is 11907000, while the sum is 56.

The spelling of 39957527225 in words is "thirty-nine billion, nine hundred fifty-seven million, five hundred twenty-seven thousand, two hundred twenty-five".