225885977 has 2 divisors, whose sum is σ = 225885978. Its totient is φ = 225885976.

The previous prime is 225885949. The next prime is 225885997. The reversal of 225885977 is 779588522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142181776 + 83704201 = 11924^2 + 9149^2 .

It is a cyclic number.

It is not a de Polignac number, because 225885977 - 2⁸ = 225885721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225885997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112942988 + 112942989.

It is an arithmetic number, because the mean of its divisors is an integer number (112942989).

Almost surely, 2^225885977 is an apocalyptic number.

It is an amenable number.

225885977 is a deficient number, since it is larger than the sum of its proper divisors (1).

225885977 is an equidigital number, since it uses as much as digits as its factorization.

225885977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 53.

The square root of 225885977 is about 15029.5035513486. The cubic root of 225885977 is about 609.0174785999.

The spelling of 225885977 in words is "two hundred twenty-five million, eight hundred eighty-five thousand, nine hundred seventy-seven".