25198325 has 6 divisors (see below), whose sum is σ = 31245954. Its totient is φ = 20158640.

The previous prime is 25198321. The next prime is 25198339. The reversal of 25198325 is 52389152.

It can be written as a sum of positive squares in 3 ways, for example, as 6345361 + 18852964 = 2519^2 + 4342^2 .

It is not a de Polignac number, because 25198325 - 2² = 25198321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25198321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503942 + ... + 503991.

It is an arithmetic number, because the mean of its divisors is an integer number (5207659).

Almost surely, 2^25198325 is an apocalyptic number.

25198325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25198325 is a deficient number, since it is larger than the sum of its proper divisors (6047629).

25198325 is a wasteful number, since it uses less digits than its factorization.

25198325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007943 (or 1007938 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 25198325 is about 5019.7933224387. The cubic root of 25198325 is about 293.1729459232.

The spelling of 25198325 in words is "twenty-five million, one hundred ninety-eight thousand, three hundred twenty-five".