225256652523 has 48 divisors (see below), whose sum is σ = 390811599360. Its totient is φ = 122235772032.

The previous prime is 225256652521. The next prime is 225256652557. The reversal of 225256652523 is 325256652522.

225256652523 is a `hidden beast` number, since 2 + 2 + 52 + 56 + 6 + 525 + 23 = 666.

It is not a de Polignac number, because 225256652523 - 2¹ = 225256652521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225256652521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357786 + ... + 760607.

It is an arithmetic number, because the mean of its divisors is an integer number (8141908320).

Almost surely, 2^225256652523 is an apocalyptic number.

225256652523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

225256652523 is a deficient number, since it is larger than the sum of its proper divisors (165554946837).

225256652523 is a wasteful number, since it uses less digits than its factorization.

225256652523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118568 (or 1118565 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

Subtracting 225256652523 from its reverse (325256652522), we obtain a palindrome (99999999999).

The spelling of 225256652523 in words is "two hundred twenty-five billion, two hundred fifty-six million, six hundred fifty-two thousand, five hundred twenty-three".