40256725 has 12 divisors (see below), whose sum is σ = 52546240. Its totient is φ = 30510000.

The previous prime is 40256707. The next prime is 40256761. The reversal of 40256725 is 52765204.

It is not a de Polignac number, because 40256725 - 2¹¹ = 40254677 is a prime.

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, 41901 + ... + 42850.

Almost surely, 2^40256725 is an apocalyptic number.

It is an amenable number.

40256725 is a deficient number, since it is larger than the sum of its proper divisors (12289515).

40256725 is a wasteful number, since it uses less digits than its factorization.

40256725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84780 (or 84775 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 40256725 is about 6344.8187523364. The cubic root of 40256725 is about 342.7252855645.

The spelling of 40256725 in words is "forty million, two hundred fifty-six thousand, seven hundred twenty-five".