25520971222560 has 192 divisors, whose sum is σ = 88809457121280. Its totient is φ = 6108586798080.

The previous prime is 25520971222531. The next prime is 25520971222577. The reversal of 25520971222560 is 6522217902552.

It is a happy number.

It is a super-2 number, since 2×25520971222560² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30174762 + ... + 31009001.

It is an arithmetic number, because the mean of its divisors is an integer number (462549255840).

Almost surely, 2^{25520971222560} is an apocalyptic number.

25520971222560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25520971222560 is an abundant number, since it is smaller than the sum of its proper divisors (63288485898720).

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

25520971222560 is a wasteful number, since it uses less digits than its factorization.

25520971222560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61183871 (or 61183863 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 25520971222560 in words is "twenty-five trillion, five hundred twenty billion, nine hundred seventy-one million, two hundred twenty-two thousand, five hundred sixty".