25255405 has 32 divisors (see below), whose sum is σ = 36013824. Its totient is φ = 16644096.

The previous prime is 25255397. The next prime is 25255411. The reversal of 25255405 is 50455252.

It is not a de Polignac number, because 25255405 - 2³ = 25255397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145899 + ... + 146071.

It is an arithmetic number, because the mean of its divisors is an integer number (1125432).

Almost surely, 2^25255405 is an apocalyptic number.

It is an amenable number.

25255405 is a deficient number, since it is larger than the sum of its proper divisors (10758419).

25255405 is a wasteful number, since it uses less digits than its factorization.

25255405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25255405 is about 5025.4755993836. The cubic root of 25255405 is about 293.3941470274.

The spelling of 25255405 in words is "twenty-five million, two hundred fifty-five thousand, four hundred five".