25224144560 has 20 divisors (see below), whose sum is σ = 58646136288. Its totient is φ = 10089657792.

The previous prime is 25224144541. The next prime is 25224144563. The reversal of 25224144560 is 6544142252.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25224144560.

It is not an unprimeable number, because it can be changed into a prime (25224144563) 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, 157650824 + ... + 157650983.

Almost surely, 2^25224144560 is an apocalyptic number.

25224144560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25224144560 is an abundant number, since it is smaller than the sum of its proper divisors (33421991728).

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

25224144560 is a wasteful number, since it uses less digits than its factorization.

25224144560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315301820 (or 315301814 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 25224144560 in words is "twenty-five billion, two hundred twenty-four million, one hundred forty-four thousand, five hundred sixty".