25226109 has 6 divisors (see below), whose sum is σ = 36437726. Its totient is φ = 16817400.

The previous prime is 25226093. The next prime is 25226161. The reversal of 25226109 is 90162252.

25226109 is a `hidden beast` number, since 25 + 22 + 610 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25220484 + 5625 = 5022^2 + 75^2 .

It is not a de Polignac number, because 25226109 - 2⁴ = 25226093 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 (25226189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1401442 + ... + 1401459.

Almost surely, 2^25226109 is an apocalyptic number.

It is an amenable number.

25226109 is a deficient number, since it is larger than the sum of its proper divisors (11211617).

25226109 is a wasteful number, since it uses less digits than its factorization.

25226109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802907 (or 2802904 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25226109 is about 5022.5600046192. The cubic root of 25226109 is about 293.2806584421.

The spelling of 25226109 in words is "twenty-five million, two hundred twenty-six thousand, one hundred nine".