25235257 has 4 divisors (see below), whose sum is σ = 25264720. Its totient is φ = 25205796.

The previous prime is 25235239. The next prime is 25235269. The reversal of 25235257 is 75253252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25235257 - 2⁷ = 25235129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25235227) 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 3 ways as a sum of consecutive naturals, for example, 13407 + ... + 15172.

It is an arithmetic number, because the mean of its divisors is an integer number (6316180).

Almost surely, 2^25235257 is an apocalyptic number.

It is an amenable number.

25235257 is a deficient number, since it is larger than the sum of its proper divisors (29463).

25235257 is an equidigital number, since it uses as much as digits as its factorization.

25235257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29462.

The product of its digits is 21000, while the sum is 31.

The square root of 25235257 is about 5023.4706130324. The cubic root of 25235257 is about 293.3161059384.

The spelling of 25235257 in words is "twenty-five million, two hundred thirty-five thousand, two hundred fifty-seven".