25426109 has 16 divisors (see below), whose sum is σ = 27699840. Its totient is φ = 23274240.

The previous prime is 25426091. The next prime is 25426117. The reversal of 25426109 is 90162452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25426109 - 2⁸ = 25425853 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 (25426129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55409 + ... + 55865.

It is an arithmetic number, because the mean of its divisors is an integer number (1731240).

Almost surely, 2^25426109 is an apocalyptic number.

It is an amenable number.

25426109 is a deficient number, since it is larger than the sum of its proper divisors (2273731).

25426109 is a wasteful number, since it uses less digits than its factorization.

25426109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 25426109 is about 5042.4308621934. The cubic root of 25426109 is about 294.0536908129.

The spelling of 25426109 in words is "twenty-five million, four hundred twenty-six thousand, one hundred nine".