225265961 has 2 divisors, whose sum is σ = 225265962. Its totient is φ = 225265960.

The previous prime is 225265927. The next prime is 225265967. The reversal of 225265961 is 169562522.

225265961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143544361 + 81721600 = 11981^2 + 9040^2 .

It is a cyclic number.

It is not a de Polignac number, because 225265961 - 2¹⁸ = 225003817 is a prime.

It is not a weakly prime, because it can be changed into another prime (225265967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112632980 + 112632981.

It is an arithmetic number, because the mean of its divisors is an integer number (112632981).

Almost surely, 2^225265961 is an apocalyptic number.

It is an amenable number.

225265961 is a deficient number, since it is larger than the sum of its proper divisors (1).

225265961 is an equidigital number, since it uses as much as digits as its factorization.

225265961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 225265961 is about 15008.8627483897. The cubic root of 225265961 is about 608.4597538642.

The spelling of 225265961 in words is "two hundred twenty-five million, two hundred sixty-five thousand, nine hundred sixty-one".