39952725 has 72 divisors (see below), whose sum is σ = 74057760. Its totient is φ = 18944640.

The previous prime is 39952709. The next prime is 39952727. The reversal of 39952725 is 52725993.

It is not a de Polignac number, because 39952725 - 2⁴ = 39952709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39952727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 753799 + ... + 753851.

It is an arithmetic number, because the mean of its divisors is an integer number (1028580).

Almost surely, 2^39952725 is an apocalyptic number.

It is an amenable number.

39952725 is a deficient number, since it is larger than the sum of its proper divisors (34105035).

39952725 is a wasteful number, since it uses less digits than its factorization.

39952725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 103 counting only the distinct ones).

The product of its digits is 170100, while the sum is 42.

The square root of 39952725 is about 6320.8167984842. The cubic root of 39952725 is about 341.8604043669.

The spelling of 39952725 in words is "thirty-nine million, nine hundred fifty-two thousand, seven hundred twenty-five".