25706607672 has 16 divisors (see below), whose sum is σ = 64266519240. Its totient is φ = 8568869216.

The previous prime is 25706607643. The next prime is 25706607683. The reversal of 25706607672 is 27670660752.

It is a congruent number.

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, 535554303 + ... + 535554350.

Almost surely, 2^25706607672 is an apocalyptic number.

It is an amenable number.

25706607672 is an abundant number, since it is smaller than the sum of its proper divisors (38559911568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25706607672 is a wasteful number, since it uses less digits than its factorization.

25706607672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071108662 (or 1071108658 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 25706607672 in words is "twenty-five billion, seven hundred six million, six hundred seven thousand, six hundred seventy-two".