25162216 has 16 divisors (see below), whose sum is σ = 47277540. Its totient is φ = 12554880.

The previous prime is 25162199. The next prime is 25162217. The reversal of 25162216 is 61226152.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 1833316 = 4830^2 + 1354^2 .

It is a super-2 number, since 2×25162216² = 1266274228061312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25162217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150 + ... + 7186.

Almost surely, 2^25162216 is an apocalyptic number.

It is an amenable number.

25162216 is a deficient number, since it is larger than the sum of its proper divisors (22115324).

25162216 is a wasteful number, since it uses less digits than its factorization.

25162216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564 (or 6560 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 25162216 is about 5016.1953709958. The cubic root of 25162216 is about 293.0328408094.

Adding to 25162216 its reverse (61226152), we get a palindrome (86388368).

The spelling of 25162216 in words is "twenty-five million, one hundred sixty-two thousand, two hundred sixteen".