25478333968 has 20 divisors (see below), whose sum is σ = 49481539948. Its totient is φ = 12708904320.

The previous prime is 25478333963. The next prime is 25478333983. The reversal of 25478333968 is 86933387452.

It can be written as a sum of positive squares in 2 ways, for example, as 11481551104 + 13996782864 = 107152^2 + 118308^2 .

It is not an unprimeable number, because it can be changed into a prime (25478333963) 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, 1884471 + ... + 1897942.

Almost surely, 2^25478333968 is an apocalyptic number.

It is an amenable number.

25478333968 is a deficient number, since it is larger than the sum of its proper divisors (24003205980).

25478333968 is a wasteful number, since it uses less digits than its factorization.

25478333968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782842 (or 3782836 counting only the distinct ones).

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

The spelling of 25478333968 in words is "twenty-five billion, four hundred seventy-eight million, three hundred thirty-three thousand, nine hundred sixty-eight".