225163651 has 2 divisors, whose sum is σ = 225163652. Its totient is φ = 225163650.

The previous prime is 225163639. The next prime is 225163733. The reversal of 225163651 is 156361522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225163651 - 2⁵ = 225163619 is a prime.

It is not a weakly prime, because it can be changed into another prime (225163621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112581825 + 112581826.

It is an arithmetic number, because the mean of its divisors is an integer number (112581826).

Almost surely, 2^225163651 is an apocalyptic number.

225163651 is a deficient number, since it is larger than the sum of its proper divisors (1).

225163651 is an equidigital number, since it uses as much as digits as its factorization.

225163651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 225163651 is about 15005.4540417809. The cubic root of 225163651 is about 608.3676243300.

The spelling of 225163651 in words is "two hundred twenty-five million, one hundred sixty-three thousand, six hundred fifty-one".