225861501 has 8 divisors (see below), whose sum is σ = 303170400. Its totient is φ = 149563472.

The previous prime is 225861487. The next prime is 225861521. The reversal of 225861501 is 105168522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225861501 - 2⁵ = 225861469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225861521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252195 + ... + 253088.

It is an arithmetic number, because the mean of its divisors is an integer number (37896300).

Almost surely, 2^225861501 is an apocalyptic number.

It is an amenable number.

225861501 is a deficient number, since it is larger than the sum of its proper divisors (77308899).

225861501 is a wasteful number, since it uses less digits than its factorization.

225861501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505435.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 225861501 is about 15028.6892642040. The cubic root of 225861501 is about 608.9954809968.

The spelling of 225861501 in words is "two hundred twenty-five million, eight hundred sixty-one thousand, five hundred one".