3940635725 has 12 divisors (see below), whose sum is σ = 5262264756. Its totient is φ = 2910007680.

The previous prime is 3940635691. The next prime is 3940635761. The reversal of 3940635725 is 5275360493.

3940635725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 116079076 + 3824556649 = 10774^2 + 61843^2 .

It is not a de Polignac number, because 3940635725 - 2⁸ = 3940635469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6062192 + ... + 6062841.

It is an arithmetic number, because the mean of its divisors is an integer number (438522063).

Almost surely, 2^3940635725 is an apocalyptic number.

It is an amenable number.

3940635725 is a deficient number, since it is larger than the sum of its proper divisors (1321629031).

3940635725 is a wasteful number, since it uses less digits than its factorization.

3940635725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125056 (or 12125051 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The square root of 3940635725 is about 62774.4830723440. The cubic root of 3940635725 is about 1579.5089705519.

The spelling of 3940635725 in words is "three billion, nine hundred forty million, six hundred thirty-five thousand, seven hundred twenty-five".