25228117 has 4 divisors (see below), whose sum is σ = 25909996. Its totient is φ = 24546240.

The previous prime is 25228103. The next prime is 25228129. The reversal of 25228117 is 71182252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19439281 + 5788836 = 4409^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 25228117 - 2⁷ = 25227989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25228517) 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, 340884 + ... + 340957.

It is an arithmetic number, because the mean of its divisors is an integer number (6477499).

Almost surely, 2^25228117 is an apocalyptic number.

It is an amenable number.

25228117 is a deficient number, since it is larger than the sum of its proper divisors (681879).

25228117 is an equidigital number, since it uses as much as digits as its factorization.

25228117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681878.

The product of its digits is 2240, while the sum is 28.

The square root of 25228117 is about 5022.7598987011. The cubic root of 25228117 is about 293.2884399558.

The spelling of 25228117 in words is "twenty-five million, two hundred twenty-eight thousand, one hundred seventeen".