25464543522 has 32 divisors (see below), whose sum is σ = 57060604224. Its totient is φ = 7507972800.

The previous prime is 25464543509. The next prime is 25464543523. The reversal of 25464543522 is 22534546452.

It is not an unprimeable number, because it can be changed into a prime (25464543523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5211429 + ... + 5216312.

It is an arithmetic number, because the mean of its divisors is an integer number (1783143882).

Almost surely, 2^25464543522 is an apocalyptic number.

25464543522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25464543522 is an abundant number, since it is smaller than the sum of its proper divisors (31596060702).

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

25464543522 is a wasteful number, since it uses less digits than its factorization.

25464543522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427794.

The product of its digits is 1152000, while the sum is 42.

The spelling of 25464543522 in words is "twenty-five billion, four hundred sixty-four million, five hundred forty-three thousand, five hundred twenty-two".