25540925 has 24 divisors (see below), whose sum is σ = 33849024. Its totient is φ = 19071360.

The previous prime is 25540913. The next prime is 25540927. The reversal of 25540925 is 52904552.

It is not a de Polignac number, because 25540925 - 2²² = 21346621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25540891 and 25540900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24209 + ... + 25241.

It is an arithmetic number, because the mean of its divisors is an integer number (1410376).

Almost surely, 2^25540925 is an apocalyptic number.

25540925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25540925 is a deficient number, since it is larger than the sum of its proper divisors (8308099).

25540925 is a wasteful number, since it uses less digits than its factorization.

25540925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1104 counting only the distinct ones).

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

The square root of 25540925 is about 5053.8030234666. The cubic root of 25540925 is about 294.4956430358.

The spelling of 25540925 in words is "twenty-five million, five hundred forty thousand, nine hundred twenty-five".