225015693918 has 32 divisors (see below), whose sum is σ = 456567885312. Its totient is φ = 73917489600.

The previous prime is 225015693899. The next prime is 225015693919. The reversal of 225015693918 is 819396510522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225015693919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330513 + ... + 747843.

It is an arithmetic number, because the mean of its divisors is an integer number (14267746416).

Almost surely, 2^225015693918 is an apocalyptic number.

225015693918 is an abundant number, since it is smaller than the sum of its proper divisors (231552191394).

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

225015693918 is a wasteful number, since it uses less digits than its factorization.

225015693918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418640.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 225015693918 in words is "two hundred twenty-five billion, fifteen million, six hundred ninety-three thousand, nine hundred eighteen".