25045225 has 6 divisors (see below), whose sum is σ = 31056110. Its totient is φ = 20036160.

The previous prime is 25045213. The next prime is 25045243. The reversal of 25045225 is 52254052.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1648656 + 23396569 = 1284^2 + 4837^2 .

It is not a de Polignac number, because 25045225 - 2⁵ = 25045193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1001809 = 25045225 / (2 + 5 + 0 + 4 + 5 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 25045225.

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, 500880 + ... + 500929.

Almost surely, 2^25045225 is an apocalyptic number.

25045225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25045225 is a deficient number, since it is larger than the sum of its proper divisors (6010885).

25045225 is a wasteful number, since it uses less digits than its factorization.

25045225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001819 (or 1001814 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 25045225 is about 5004.5204565473. The cubic root of 25045225 is about 292.5779858777.

Adding to 25045225 its reverse (52254052), we get a palindrome (77299277).

The spelling of 25045225 in words is "twenty-five million, forty-five thousand, two hundred twenty-five".