25905425 has 48 divisors (see below), whose sum is σ = 40414080. Its totient is φ = 16035840.

The previous prime is 25905403. The next prime is 25905431. The reversal of 25905425 is 52450952.

It is not a de Polignac number, because 25905425 - 2⁶ = 25905361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25905391 and 25905400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134129 + ... + 134321.

It is an arithmetic number, because the mean of its divisors is an integer number (841960).

Almost surely, 2^25905425 is an apocalyptic number.

25905425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25905425 is a deficient number, since it is larger than the sum of its proper divisors (14508655).

25905425 is a wasteful number, since it uses less digits than its factorization.

25905425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 25905425 is about 5089.7372230794. The cubic root of 25905425 is about 295.8899677770.

The spelling of 25905425 in words is "twenty-five million, nine hundred five thousand, four hundred twenty-five".