25977473460 has 36 divisors (see below), whose sum is σ = 78798336708. Its totient is φ = 6927326208.

The previous prime is 25977473453. The next prime is 25977473479. The reversal of 25977473460 is 6437477952.

25977473460 is a `hidden beast` number, since 2 + 597 + 7 + 4 + 7 + 3 + 46 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14925997584 + 11051475876 = 122172^2 + 105126^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 25977473397 and 25977473406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72159469 + ... + 72159828.

Almost surely, 2^25977473460 is an apocalyptic number.

25977473460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25977473460 is an abundant number, since it is smaller than the sum of its proper divisors (52820863248).

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

25977473460 is a wasteful number, since it uses less digits than its factorization.

25977473460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144319312 (or 144319307 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 25977473460 in words is "twenty-five billion, nine hundred seventy-seven million, four hundred seventy-three thousand, four hundred sixty".