25152225 has 48 divisors (see below), whose sum is σ = 49615872. Its totient is φ = 10992960.

The previous prime is 25152209. The next prime is 25152289. The reversal of 25152225 is 52225152.

It is not a de Polignac number, because 25152225 - 2⁴ = 25152209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25152195 and 25152204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11034 + ... + 13116.

It is an arithmetic number, because the mean of its divisors is an integer number (1033664).

Almost surely, 2^25152225 is an apocalyptic number.

25152225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25152225 is a deficient number, since it is larger than the sum of its proper divisors (24463647).

25152225 is a wasteful number, since it uses less digits than its factorization.

25152225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2121 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 25152225 is about 5015.1993978306. The cubic root of 25152225 is about 292.9940514504.

Subtracting from 25152225 its product of digits (2000), we obtain a square (25150225 = 5015²).

Adding to 25152225 its reverse (52225152), we get a palindrome (77377377).

The spelling of 25152225 in words is "twenty-five million, one hundred fifty-two thousand, two hundred twenty-five".