25152216 has 16 divisors (see below), whose sum is σ = 62880600. Its totient is φ = 8384064.

The previous prime is 25152209. The next prime is 25152289. The reversal of 25152216 is 61225152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1048009 = 25152216 / (2 + 5 + 1 + 5 + 2 + 2 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523981 + ... + 524028.

Almost surely, 2^25152216 is an apocalyptic number.

It is an amenable number.

25152216 is an abundant number, since it is smaller than the sum of its proper divisors (37728384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25152216 is a wasteful number, since it uses less digits than its factorization.

25152216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048018 (or 1048014 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 25152216 is about 5015.1985005581. The cubic root of 25152216 is about 292.9940165039.

Adding to 25152216 its reverse (61225152), we get a palindrome (86377368).

The spelling of 25152216 in words is "twenty-five million, one hundred fifty-two thousand, two hundred sixteen".