25257970 has 8 divisors (see below), whose sum is σ = 45464364. Its totient is φ = 10103184.

The previous prime is 25257949. The next prime is 25257989. The reversal of 25257970 is 7975252.

It can be written as a sum of positive squares in 2 ways, for example, as 24690961 + 567009 = 4969^2 + 753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1262889 + ... + 1262908.

Almost surely, 2^25257970 is an apocalyptic number.

25257970 is a deficient number, since it is larger than the sum of its proper divisors (20206394).

25257970 is a wasteful number, since it uses less digits than its factorization.

25257970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525804.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 25257970 is about 5025.7307926311. The cubic root of 25257970 is about 293.4040792975.

The spelling of 25257970 in words is "twenty-five million, two hundred fifty-seven thousand, nine hundred seventy".