25888257 has 6 divisors (see below), whose sum is σ = 37394162. Its totient is φ = 17258832.

The previous prime is 25888243. The next prime is 25888273. The reversal of 25888257 is 75288852.

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 848241 = 5004^2 + 921^2 .

It is not a de Polignac number, because 25888257 - 2¹⁰ = 25887233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25888207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1438228 + ... + 1438245.

Almost surely, 2^25888257 is an apocalyptic number.

It is an amenable number.

25888257 is a deficient number, since it is larger than the sum of its proper divisors (11505905).

25888257 is a wasteful number, since it uses less digits than its factorization.

25888257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876479 (or 2876476 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 25888257 is about 5088.0504124861. The cubic root of 25888257 is about 295.8245894306.

The spelling of 25888257 in words is "twenty-five million, eight hundred eighty-eight thousand, two hundred fifty-seven".