25444630560 has 48 divisors (see below), whose sum is σ = 80150587776. Its totient is φ = 6785234688.

The previous prime is 25444630553. The next prime is 25444630579. The reversal of 25444630560 is 6503644452.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26504344 + ... + 26505303.

It is an arithmetic number, because the mean of its divisors is an integer number (1669803912).

Almost surely, 2^25444630560 is an apocalyptic number.

25444630560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25444630560 is an abundant number, since it is smaller than the sum of its proper divisors (54705957216).

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

25444630560 is a wasteful number, since it uses less digits than its factorization.

25444630560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53009665 (or 53009657 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 25444630560 in words is "twenty-five billion, four hundred forty-four million, six hundred thirty thousand, five hundred sixty".