25222557854256 has 40 divisors (see below), whose sum is σ = 74466599380224. Its totient is φ = 7206445101120.

The previous prime is 25222557854251. The next prime is 25222557854261. The reversal of 25222557854256 is 65245875522252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25222557854251) and next prime (25222557854261).

It is a super-2 number, since 2×25222557854256² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25222557854256.

It is not an unprimeable number, because it can be changed into a prime (25222557854251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37533567900 + ... + 37533568571.

Almost surely, 2^{25222557854256} is an apocalyptic number.

It is an amenable number.

25222557854256 is an abundant number, since it is smaller than the sum of its proper divisors (49244041525968).

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

25222557854256 is a wasteful number, since it uses less digits than its factorization.

25222557854256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75067136489 (or 75067136483 counting only the distinct ones).

The product of its digits is 134400000, while the sum is 60.

The spelling of 25222557854256 in words is "twenty-five trillion, two hundred twenty-two billion, five hundred fifty-seven million, eight hundred fifty-four thousand, two hundred fifty-six".