25382557 has 2 divisors, whose sum is σ = 25382558. Its totient is φ = 25382556.

The previous prime is 25382549. The next prime is 25382561. The reversal of 25382557 is 75528352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14584761 + 10797796 = 3819^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 25382557 - 2³ = 25382549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25382587) 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, 12691278 + 12691279.

It is an arithmetic number, because the mean of its divisors is an integer number (12691279).

Almost surely, 2^25382557 is an apocalyptic number.

It is an amenable number.

25382557 is a deficient number, since it is larger than the sum of its proper divisors (1).

25382557 is an equidigital number, since it uses as much as digits as its factorization.

25382557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 37.

The square root of 25382557 is about 5038.1104592893. The cubic root of 25382557 is about 293.8857014782.

The spelling of 25382557 in words is "twenty-five million, three hundred eighty-two thousand, five hundred fifty-seven".