172225604 has 12 divisors (see below), whose sum is σ = 304379628. Its totient is φ = 85260000.

The previous prime is 172225561. The next prime is 172225607. The reversal of 172225604 is 406522271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 166926400 + 5299204 = 12920^2 + 2302^2 .

It is not an unprimeable number, because it can be changed into a prime (172225607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212747 + ... + 213554.

It is an arithmetic number, because the mean of its divisors is an integer number (25364969).

Almost surely, 2^172225604 is an apocalyptic number.

It is an amenable number.

172225604 is a deficient number, since it is larger than the sum of its proper divisors (132154024).

172225604 is a wasteful number, since it uses less digits than its factorization.

172225604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426406 (or 426404 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 172225604 is about 13123.4753019160. The cubic root of 172225604 is about 556.3728198432.

Adding to 172225604 its reverse (406522271), we get a palindrome (578747875).

The spelling of 172225604 in words is "one hundred seventy-two million, two hundred twenty-five thousand, six hundred four".