25256757 has 16 divisors (see below), whose sum is σ = 35624960. Its totient is φ = 15872112.

The previous prime is 25256753. The next prime is 25256771. The reversal of 25256757 is 75765252.

It is not a de Polignac number, because 25256757 - 2² = 25256753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25256753) 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 15 ways as a sum of consecutive naturals, for example, 11718 + ... + 13704.

It is an arithmetic number, because the mean of its divisors is an integer number (2226560).

Almost surely, 2^25256757 is an apocalyptic number.

It is an amenable number.

25256757 is a deficient number, since it is larger than the sum of its proper divisors (10368203).

25256757 is a wasteful number, since it uses less digits than its factorization.

25256757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232.

The product of its digits is 147000, while the sum is 39.

The square root of 25256757 is about 5025.6101122152. The cubic root of 25256757 is about 293.3993823663.

The spelling of 25256757 in words is "twenty-five million, two hundred fifty-six thousand, seven hundred fifty-seven".