225291858 has 16 divisors (see below), whose sum is σ = 491546016. Its totient is φ = 68270240.

The previous prime is 225291839. The next prime is 225291863. The reversal of 225291858 is 858192522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1706691 + ... + 1706822.

It is an arithmetic number, because the mean of its divisors is an integer number (30721626).

Almost surely, 2^225291858 is an apocalyptic number.

225291858 is an abundant number, since it is smaller than the sum of its proper divisors (266254158).

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

225291858 is a wasteful number, since it uses less digits than its factorization.

225291858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413529.

The product of its digits is 115200, while the sum is 42.

The square root of 225291858 is about 15009.7254471892. The cubic root of 225291858 is about 608.4830695313.

The spelling of 225291858 in words is "two hundred twenty-five million, two hundred ninety-one thousand, eight hundred fifty-eight".