25105225 has 6 divisors (see below), whose sum is σ = 31130510. Its totient is φ = 20084160.

The previous prime is 25105219. The next prime is 25105261. The reversal of 25105225 is 52250152.

It can be written as a sum of positive squares in 3 ways, for example, as 394384 + 24710841 = 628^2 + 4971^2 .

It is not a de Polignac number, because 25105225 - 2³ = 25105217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25105196 and 25105205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502080 + ... + 502129.

Almost surely, 2^25105225 is an apocalyptic number.

25105225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25105225 is a deficient number, since it is larger than the sum of its proper divisors (6025285).

25105225 is a wasteful number, since it uses less digits than its factorization.

25105225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004219 (or 1004214 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25105225 is about 5010.5114509399. The cubic root of 25105225 is about 292.8114392858.

Adding to 25105225 its reverse (52250152), we get a palindrome (77355377).

The spelling of 25105225 in words is "twenty-five million, one hundred five thousand, two hundred twenty-five".