25463986672 has 20 divisors (see below), whose sum is σ = 50669893576. Its totient is φ = 12387885120.

The previous prime is 25463986661. The next prime is 25463986679. The reversal of 25463986672 is 27668936452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25463986679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21506154 + ... + 21507337.

Almost surely, 2^25463986672 is an apocalyptic number.

It is an amenable number.

25463986672 is a deficient number, since it is larger than the sum of its proper divisors (25205906904).

25463986672 is a wasteful number, since it uses less digits than its factorization.

25463986672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43013536 (or 43013530 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 58.

The spelling of 25463986672 in words is "twenty-five billion, four hundred sixty-three million, nine hundred eighty-six thousand, six hundred seventy-two".