225711903 has 16 divisors (see below), whose sum is σ = 315463680. Its totient is φ = 143277024.

The previous prime is 225711883. The next prime is 225711917. The reversal of 225711903 is 309117522.

It is a de Polignac number, because none of the positive numbers 2^k-225711903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225711103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8053 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (19716480).

Almost surely, 2^225711903 is an apocalyptic number.

225711903 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

225711903 is a deficient number, since it is larger than the sum of its proper divisors (89751777).

225711903 is a wasteful number, since it uses less digits than its factorization.

225711903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14918.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 225711903 is about 15023.7113590484. The cubic root of 225711903 is about 608.8609964754.

The spelling of 225711903 in words is "two hundred twenty-five million, seven hundred eleven thousand, nine hundred three".