225697519 has 2 divisors, whose sum is σ = 225697520. Its totient is φ = 225697518.

The previous prime is 225697513. The next prime is 225697541. The reversal of 225697519 is 915796522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225697519 - 2²³ = 217308911 is a prime.

It is a super-2 number, since 2×225697519² = 101878740165510722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225697513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112848759 + 112848760.

It is an arithmetic number, because the mean of its divisors is an integer number (112848760).

Almost surely, 2^225697519 is an apocalyptic number.

225697519 is a deficient number, since it is larger than the sum of its proper divisors (1).

225697519 is an equidigital number, since it uses as much as digits as its factorization.

225697519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 46.

The square root of 225697519 is about 15023.2326414790. The cubic root of 225697519 is about 608.8480625207.

The spelling of 225697519 in words is "two hundred twenty-five million, six hundred ninety-seven thousand, five hundred nineteen".