25464919830 has 32 divisors (see below), whose sum is σ = 69846637824. Its totient is φ = 5820553056.

The previous prime is 25464919817. The next prime is 25464919847. The reversal of 25464919830 is 3891946452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60630552 + ... + 60630971.

It is an arithmetic number, because the mean of its divisors is an integer number (2182707432).

Almost surely, 2^25464919830 is an apocalyptic number.

25464919830 is an abundant number, since it is smaller than the sum of its proper divisors (44381717994).

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

25464919830 is a wasteful number, since it uses less digits than its factorization.

25464919830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121261540.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 25464919830 in words is "twenty-five billion, four hundred sixty-four million, nine hundred nineteen thousand, eight hundred thirty".