25405321004560 has 80 divisors (see below), whose sum is σ = 67513768949376. Its totient is φ = 8709337488384.

The previous prime is 25405321004551. The next prime is 25405321004587. The reversal of 25405321004560 is 6540012350452.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1864252 + ... + 7367908.

Almost surely, 2^{25405321004560} is an apocalyptic number.

25405321004560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25405321004560 is an abundant number, since it is smaller than the sum of its proper divisors (42108447944816).

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

25405321004560 is a wasteful number, since it uses less digits than its factorization.

25405321004560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511920 (or 5511914 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 25405321004560 in words is "twenty-five trillion, four hundred five billion, three hundred twenty-one million, four thousand, five hundred sixty".