25115212 has 12 divisors (see below), whose sum is σ = 44554216. Its totient is φ = 12385440.

The previous prime is 25115197. The next prime is 25115213. The reversal of 25115212 is 21251152.

It is a self number, because there is not a number n which added to its sum of digits gives 25115212.

It is not an unprimeable number, because it can be changed into a prime (25115213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42714 + ... + 43297.

Almost surely, 2^25115212 is an apocalyptic number.

It is an amenable number.

25115212 is a deficient number, since it is larger than the sum of its proper divisors (19439004).

25115212 is a wasteful number, since it uses less digits than its factorization.

25115212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86088 (or 86086 counting only the distinct ones).

The product of its digits is 200, while the sum is 19.

The square root of 25115212 is about 5011.5079566933. The cubic root of 25115212 is about 292.8502614853.

Adding to 25115212 its reverse (21251152), we get a palindrome (46366364).

The spelling of 25115212 in words is "twenty-five million, one hundred fifteen thousand, two hundred twelve".