25936257 has 8 divisors (see below), whose sum is σ = 34677376. Its totient is φ = 17242992.

The previous prime is 25936247. The next prime is 25936259. The reversal of 25936257 is 75263952.

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

It is not a de Polignac number, because 25936257 - 2⁴ = 25936241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25936259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10678 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (4334672).

Almost surely, 2^25936257 is an apocalyptic number.

It is an amenable number.

25936257 is a deficient number, since it is larger than the sum of its proper divisors (8741119).

25936257 is a wasteful number, since it uses less digits than its factorization.

25936257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23927.

The product of its digits is 113400, while the sum is 39.

The square root of 25936257 is about 5092.7651624633. The cubic root of 25936257 is about 296.0073082259.

The spelling of 25936257 in words is "twenty-five million, nine hundred thirty-six thousand, two hundred fifty-seven".