25569113 has 2 divisors, whose sum is σ = 25569114. Its totient is φ = 25569112.

The previous prime is 25569091. The next prime is 25569127. The reversal of 25569113 is 31196552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15784729 + 9784384 = 3973^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 25569113 - 2²⁰ = 24520537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25569113.

It is not a weakly prime, because it can be changed into another prime (25569163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12784556 + 12784557.

It is an arithmetic number, because the mean of its divisors is an integer number (12784557).

Almost surely, 2^25569113 is an apocalyptic number.

It is an amenable number.

25569113 is a deficient number, since it is larger than the sum of its proper divisors (1).

25569113 is an equidigital number, since it uses as much as digits as its factorization.

25569113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 25569113 is about 5056.5910453585. The cubic root of 25569113 is about 294.6039423136.

The spelling of 25569113 in words is "twenty-five million, five hundred sixty-nine thousand, one hundred thirteen".