225555415 has 4 divisors (see below), whose sum is σ = 270666504. Its totient is φ = 180444328.

The previous prime is 225555409. The next prime is 225555431. The reversal of 225555415 is 514555522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225555415 - 2⁵ = 225555383 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 22555537 + ... + 22555546.

It is an arithmetic number, because the mean of its divisors is an integer number (67666626).

Almost surely, 2^225555415 is an apocalyptic number.

225555415 is a deficient number, since it is larger than the sum of its proper divisors (45111089).

225555415 is an equidigital number, since it uses as much as digits as its factorization.

225555415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45111088.

The product of its digits is 50000, while the sum is 34.

The square root of 225555415 is about 15018.5024220127. The cubic root of 225555415 is about 608.7202544260.

The spelling of 225555415 in words is "two hundred twenty-five million, five hundred fifty-five thousand, four hundred fifteen".