25905225 has 24 divisors (see below), whose sum is σ = 43747200. Its totient is φ = 13520320.

The previous prime is 25905211. The next prime is 25905247. The reversal of 25905225 is 52250952.

It is not a de Polignac number, because 25905225 - 2⁷ = 25905097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25905192 and 25905201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^25905225 is an apocalyptic number.

25905225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25905225 is a deficient number, since it is larger than the sum of its proper divisors (17841975).

25905225 is a wasteful number, since it uses less digits than its factorization.

25905225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409 (or 7404 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 25905225 is about 5089.7175756617. The cubic root of 25905225 is about 295.8892063129.

The spelling of 25905225 in words is "twenty-five million, nine hundred five thousand, two hundred twenty-five".