25221152480 has 48 divisors (see below), whose sum is σ = 60131665440. Its totient is φ = 9995899392.

The previous prime is 25221152449. The next prime is 25221152491. The reversal of 25221152480 is 8425112252.

It is a super-2 number, since 2×25221152480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 705644 + ... + 740523.

It is an arithmetic number, because the mean of its divisors is an integer number (1252743030).

Almost surely, 2^25221152480 is an apocalyptic number.

25221152480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25221152480 is an abundant number, since it is smaller than the sum of its proper divisors (34910512960).

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

25221152480 is a wasteful number, since it uses less digits than its factorization.

25221152480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446291 (or 1446283 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 25221152480 in words is "twenty-five billion, two hundred twenty-one million, one hundred fifty-two thousand, four hundred eighty".