25220116 has 6 divisors (see below), whose sum is σ = 44135210. Its totient is φ = 12610056.

The previous prime is 25220099. The next prime is 25220119. The reversal of 25220116 is 61102252.

It can be written as a sum of positive squares in only one way, i.e., 24960016 + 260100 = 4996^2 + 510^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25220093 and 25220102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3152511 + ... + 3152518.

Almost surely, 2^25220116 is an apocalyptic number.

It is an amenable number.

25220116 is a deficient number, since it is larger than the sum of its proper divisors (18915094).

25220116 is a wasteful number, since it uses less digits than its factorization.

25220116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305033 (or 6305031 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 25220116 is about 5021.9633610770. The cubic root of 25220116 is about 293.2574315784.

Adding to 25220116 its reverse (61102252), we get a palindrome (86322368).

The spelling of 25220116 in words is "twenty-five million, two hundred twenty thousand, one hundred sixteen".