25224772860 has 72 divisors (see below), whose sum is σ = 87445883616. Its totient is φ = 5765662080.

The previous prime is 25224772751. The next prime is 25224772871. The reversal of 25224772860 is 6827742252.

25224772860 is a `hidden beast` number, since 2 + 522 + 47 + 7 + 2 + 86 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10008571 + ... + 10011090.

Almost surely, 2^25224772860 is an apocalyptic number.

25224772860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25224772860 is an abundant number, since it is smaller than the sum of its proper divisors (62221110756).

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

25224772860 is a wasteful number, since it uses less digits than its factorization.

25224772860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019683 (or 20019678 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 25224772860 in words is "twenty-five billion, two hundred twenty-four million, seven hundred seventy-two thousand, eight hundred sixty".