25135589 has 2 divisors, whose sum is σ = 25135590. Its totient is φ = 25135588.

The previous prime is 25135559. The next prime is 25135597. The reversal of 25135589 is 98553152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 1932100 = 4817^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 25135589 - 2¹² = 25131493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25135529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567794 + 12567795.

It is an arithmetic number, because the mean of its divisors is an integer number (12567795).

Almost surely, 2^25135589 is an apocalyptic number.

It is an amenable number.

25135589 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135589 is an equidigital number, since it uses as much as digits as its factorization.

25135589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 38.

The square root of 25135589 is about 5013.5405653091. The cubic root of 25135589 is about 292.9294405453.

The spelling of 25135589 in words is "twenty-five million, one hundred thirty-five thousand, five hundred eighty-nine".