25163569 has 2 divisors, whose sum is σ = 25163570. Its totient is φ = 25163568.

The previous prime is 25163549. The next prime is 25163573. The reversal of 25163569 is 96536152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21977344 + 3186225 = 4688^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 25163569 - 2⁹ = 25163057 is a prime.

It is a super-2 number, since 2×25163569² = 1266410409635522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25163549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12581784 + 12581785.

It is an arithmetic number, because the mean of its divisors is an integer number (12581785).

Almost surely, 2^25163569 is an apocalyptic number.

It is an amenable number.

25163569 is a deficient number, since it is larger than the sum of its proper divisors (1).

25163569 is an equidigital number, since it uses as much as digits as its factorization.

25163569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 25163569 is about 5016.3302323511. The cubic root of 25163569 is about 293.0380929479.

The spelling of 25163569 in words is "twenty-five million, one hundred sixty-three thousand, five hundred sixty-nine".