39925725 has 48 divisors (see below), whose sum is σ = 76221312. Its totient is φ = 18063360.

The previous prime is 39925703. The next prime is 39925727. The reversal of 39925725 is 52752993.

It is not a de Polignac number, because 39925725 - 2⁶ = 39925661 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 (39925727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58989 + ... + 59661.

It is an arithmetic number, because the mean of its divisors is an integer number (1587944).

Almost surely, 2^39925725 is an apocalyptic number.

39925725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39925725 is a deficient number, since it is larger than the sum of its proper divisors (36295587).

39925725 is a wasteful number, since it uses less digits than its factorization.

39925725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 801 counting only the distinct ones).

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

The square root of 39925725 is about 6318.6806376015. The cubic root of 39925725 is about 341.7833774060.

The spelling of 39925725 in words is "thirty-nine million, nine hundred twenty-five thousand, seven hundred twenty-five".