25629966468 has 18 divisors (see below), whose sum is σ = 64786859774. Its totient is φ = 8543322144.

The previous prime is 25629966443. The next prime is 25629966473. The reversal of 25629966468 is 86466992652.

25629966468 is a `hidden beast` number, since 2 + 562 + 9 + 9 + 6 + 6 + 4 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20749826304 + 4880140164 = 144048^2 + 69858^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355971721 + ... + 355971792.

Almost surely, 2^25629966468 is an apocalyptic number.

It is an amenable number.

25629966468 is an abundant number, since it is smaller than the sum of its proper divisors (39156893306).

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

25629966468 is a wasteful number, since it uses less digits than its factorization.

25629966468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711943523 (or 711943518 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 25629966468 in words is "twenty-five billion, six hundred twenty-nine million, nine hundred sixty-six thousand, four hundred sixty-eight".