225994989902 has 16 divisors (see below), whose sum is σ = 370143486000. Its totient is φ = 102632355840.

The previous prime is 225994989901. The next prime is 225994989931. The reversal of 225994989902 is 209989499522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225994989901) 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, 4607027 + ... + 4655822.

It is an arithmetic number, because the mean of its divisors is an integer number (23133967875).

Almost surely, 2^225994989902 is an apocalyptic number.

225994989902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225994989902 is a deficient number, since it is larger than the sum of its proper divisors (144148496098).

225994989902 is a wasteful number, since it uses less digits than its factorization.

225994989902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263971.

The product of its (nonzero) digits is 75582720, while the sum is 68.

The spelling of 225994989902 in words is "two hundred twenty-five billion, nine hundred ninety-four million, nine hundred eighty-nine thousand, nine hundred two".