25220113 has 8 divisors (see below), whose sum is σ = 25726248. Its totient is φ = 24718464.

The previous prime is 25220099. The next prime is 25220119. The reversal of 25220113 is 31102252.

It can be written as a sum of positive squares in 4 ways, for example, as 3017169 + 22202944 = 1737^2 + 4712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25220113 - 2¹⁷ = 25089041 is a prime.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 11631 + ... + 13627.

It is an arithmetic number, because the mean of its divisors is an integer number (3215781).

Almost surely, 2^25220113 is an apocalyptic number.

It is an amenable number.

25220113 is a deficient number, since it is larger than the sum of its proper divisors (506135).

25220113 is a wasteful number, since it uses less digits than its factorization.

25220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25220113 is about 5021.9630623890. The cubic root of 25220113 is about 293.2574199505.

Adding to 25220113 its reverse (31102252), we get a palindrome (56322365).

The spelling of 25220113 in words is "twenty-five million, two hundred twenty thousand, one hundred thirteen".