25380657 has 12 divisors (see below), whose sum is σ = 36875124. Its totient is φ = 16821600.

The previous prime is 25380647. The next prime is 25380671. The reversal of 25380657 is 75608352.

It can be written as a sum of positive squares in 2 ways, for example, as 22268961 + 3111696 = 4719^2 + 1764^2 .

It is not a de Polignac number, because 25380657 - 2⁷ = 25380529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25380647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6594 + ... + 9707.

It is an arithmetic number, because the mean of its divisors is an integer number (3072927).

Almost surely, 2^25380657 is an apocalyptic number.

It is an amenable number.

25380657 is a deficient number, since it is larger than the sum of its proper divisors (11494467).

25380657 is a wasteful number, since it uses less digits than its factorization.

25380657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16480 (or 16477 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25380657 is about 5037.9218930031. The cubic root of 25380657 is about 293.8783684008.

The spelling of 25380657 in words is "twenty-five million, three hundred eighty thousand, six hundred fifty-seven".