25656316516 has 12 divisors (see below), whose sum is σ = 44900690800. Its totient is φ = 12827547720.

The previous prime is 25656316451. The next prime is 25656316523. The reversal of 25656316516 is 61561365652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50490 + ... + 232081.

Almost surely, 2^25656316516 is an apocalyptic number.

It is an amenable number.

25656316516 is a deficient number, since it is larger than the sum of its proper divisors (19244374284).

25656316516 is a wasteful number, since it uses less digits than its factorization.

25656316516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305274 (or 305272 counting only the distinct ones).

The product of its digits is 972000, while the sum is 46.

The spelling of 25656316516 in words is "twenty-five billion, six hundred fifty-six million, three hundred sixteen thousand, five hundred sixteen".