25401589 has 2 divisors, whose sum is σ = 25401590. Its totient is φ = 25401588.

The previous prime is 25401583. The next prime is 25401611. The reversal of 25401589 is 98510452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 11785489 = 3690^2 + 3433^2 .

It is a cyclic number.

It is not a de Polignac number, because 25401589 - 2²³ = 17012981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25401583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700794 + 12700795.

It is an arithmetic number, because the mean of its divisors is an integer number (12700795).

Almost surely, 2^25401589 is an apocalyptic number.

It is an amenable number.

25401589 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401589 is an equidigital number, since it uses as much as digits as its factorization.

25401589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 25401589 is about 5039.9989087300. The cubic root of 25401589 is about 293.9591355732.

The spelling of 25401589 in words is "twenty-five million, four hundred one thousand, five hundred eighty-nine".