25507255 has 4 divisors (see below), whose sum is σ = 30608712. Its totient is φ = 20405800.

The previous prime is 25507249. The next prime is 25507271. The reversal of 25507255 is 55270552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25507255 - 2¹⁵ = 25474487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550721 + ... + 2550730.

It is an arithmetic number, because the mean of its divisors is an integer number (7652178).

Almost surely, 2^25507255 is an apocalyptic number.

25507255 is a deficient number, since it is larger than the sum of its proper divisors (5101457).

25507255 is an equidigital number, since it uses as much as digits as its factorization.

25507255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101456.

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 25507255 is about 5050.4707701362. The cubic root of 25507255 is about 294.3661772381.

The spelling of 25507255 in words is "twenty-five million, five hundred seven thousand, two hundred fifty-five".