225637457 has 2 divisors, whose sum is σ = 225637458. Its totient is φ = 225637456.

The previous prime is 225637453. The next prime is 225637513. The reversal of 225637457 is 754736522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166900561 + 58736896 = 12919^2 + 7664^2 .

It is a cyclic number.

It is not a de Polignac number, because 225637457 - 2² = 225637453 is a prime.

It is not a weakly prime, because it can be changed into another prime (225637453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112818728 + 112818729.

It is an arithmetic number, because the mean of its divisors is an integer number (112818729).

Almost surely, 2^225637457 is an apocalyptic number.

It is an amenable number.

225637457 is a deficient number, since it is larger than the sum of its proper divisors (1).

225637457 is an equidigital number, since it uses as much as digits as its factorization.

225637457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 41.

The square root of 225637457 is about 15021.2335378956. The cubic root of 225637457 is about 608.7940494079.

The spelling of 225637457 in words is "two hundred twenty-five million, six hundred thirty-seven thousand, four hundred fifty-seven".