25464392020 has 12 divisors (see below), whose sum is σ = 53475223284. Its totient is φ = 10185756800.

The previous prime is 25464392003. The next prime is 25464392027. The reversal of 25464392020 is 2029346452.

It can be written as a sum of positive squares in 2 ways, for example, as 7629323716 + 17835068304 = 87346^2 + 133548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25464392027) 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, 636609781 + ... + 636609820.

It is an arithmetic number, because the mean of its divisors is an integer number (4456268607).

Almost surely, 2^25464392020 is an apocalyptic number.

25464392020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25464392020 is an abundant number, since it is smaller than the sum of its proper divisors (28010831264).

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

25464392020 is a wasteful number, since it uses less digits than its factorization.

25464392020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273219610 (or 1273219608 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 25464392020 in words is "twenty-five billion, four hundred sixty-four million, three hundred ninety-two thousand, twenty".