40256640525 has 12 divisors (see below), whose sum is σ = 66557645792. Its totient is φ = 21470208240.

The previous prime is 40256640497. The next prime is 40256640559. The reversal of 40256640525 is 52504665204.

It is not a de Polignac number, because 40256640525 - 2⁶ = 40256640461 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, 268377529 + ... + 268377678.

Almost surely, 2^40256640525 is an apocalyptic number.

It is an amenable number.

40256640525 is a deficient number, since it is larger than the sum of its proper divisors (26301005267).

40256640525 is a wasteful number, since it uses less digits than its factorization.

40256640525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536755220 (or 536755215 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 40256640525 in words is "forty billion, two hundred fifty-six million, six hundred forty thousand, five hundred twenty-five".