225166256700 has 144 divisors (see below), whose sum is σ = 812236180224. Its totient is φ = 46787788800.

The previous prime is 225166256687. The next prime is 225166256797. The reversal of 225166256700 is 7652661522.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4850629 + ... + 4896828.

Almost surely, 2^225166256700 is an apocalyptic number.

225166256700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225166256700 is an abundant number, since it is smaller than the sum of its proper divisors (587069923524).

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

225166256700 is a wasteful number, since it uses less digits than its factorization.

225166256700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747492 (or 9747485 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 225166256700 in words is "two hundred twenty-five billion, one hundred sixty-six million, two hundred fifty-six thousand, seven hundred".