25319225 has 6 divisors (see below), whose sum is σ = 31395870. Its totient is φ = 20255360.

The previous prime is 25319221. The next prime is 25319237. The reversal of 25319225 is 52291352.

It can be written as a sum of positive squares in 3 ways, for example, as 6492304 + 18826921 = 2548^2 + 4339^2 .

It is not a de Polignac number, because 25319225 - 2² = 25319221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25319221) 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, 506360 + ... + 506409.

It is an arithmetic number, because the mean of its divisors is an integer number (5232645).

Almost surely, 2^25319225 is an apocalyptic number.

25319225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25319225 is a deficient number, since it is larger than the sum of its proper divisors (6076645).

25319225 is a wasteful number, since it uses less digits than its factorization.

25319225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012779 (or 1012774 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 25319225 is about 5031.8212408630. The cubic root of 25319225 is about 293.6410732394.

It can be divided in two parts, 25 and 319225, that multiplied together give a square (7980625 = 2825²).

The spelling of 25319225 in words is "twenty-five million, three hundred nineteen thousand, two hundred twenty-five".