225540004 has 12 divisors (see below), whose sum is σ = 407427328. Its totient is φ = 109132200.

The previous prime is 225539987. The next prime is 225540019. The reversal of 225540004 is 400045522.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909312 + ... + 909559.

Almost surely, 2^225540004 is an apocalyptic number.

It is an amenable number.

225540004 is a deficient number, since it is larger than the sum of its proper divisors (181887324).

225540004 is a wasteful number, since it uses less digits than its factorization.

225540004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818906 (or 1818904 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 225540004 is about 15017.9893461142. The cubic root of 225540004 is about 608.7063905728.

Adding to 225540004 its reverse (400045522), we get a palindrome (625585526).

The spelling of 225540004 in words is "two hundred twenty-five million, five hundred forty thousand, four".