25510456668 has 12 divisors (see below), whose sum is σ = 59524398920. Its totient is φ = 8503485552.

The previous prime is 25510456633. The next prime is 25510456687. The reversal of 25510456668 is 86665401552.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1062935683 + ... + 1062935706.

Almost surely, 2^25510456668 is an apocalyptic number.

It is an amenable number.

25510456668 is an abundant number, since it is smaller than the sum of its proper divisors (34013942252).

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

25510456668 is a wasteful number, since it uses less digits than its factorization.

25510456668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125871396 (or 2125871394 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 25510456668 in words is "twenty-five billion, five hundred ten million, four hundred fifty-six thousand, six hundred sixty-eight".