25591125 has 32 divisors (see below), whose sum is σ = 48672000. Its totient is φ = 11697600.

The previous prime is 25591121. The next prime is 25591183. The reversal of 25591125 is 52119552.

It is not a de Polignac number, because 25591125 - 2² = 25591121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25591092 and 25591101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25591121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2250 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (1521000).

Almost surely, 2^25591125 is an apocalyptic number.

25591125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25591125 is a deficient number, since it is larger than the sum of its proper divisors (23080875).

25591125 is an equidigital number, since it uses as much as digits as its factorization.

25591125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774 (or 9764 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 25591125 is about 5058.7671422986. The cubic root of 25591125 is about 294.6884578510.

The spelling of 25591125 in words is "twenty-five million, five hundred ninety-one thousand, one hundred twenty-five".