25520670222256 has 60 divisors (see below), whose sum is σ = 54353272933512. Its totient is φ = 11599619680000.

The previous prime is 25520670222253. The next prime is 25520670222287. The reversal of 25520670222256 is 65222207602552.

It is a super-2 number, since 2×25520670222256² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25520670222253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33152931 + ... + 33913981.

Almost surely, 2^{25520670222256} is an apocalyptic number.

It is an amenable number.

25520670222256 is an abundant number, since it is smaller than the sum of its proper divisors (28832602711256).

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

25520670222256 is a wasteful number, since it uses less digits than its factorization.

25520670222256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778402 (or 778385 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 46.

The spelling of 25520670222256 in words is "twenty-five trillion, five hundred twenty billion, six hundred seventy million, two hundred twenty-two thousand, two hundred fifty-six".