25394915 has 16 divisors (see below), whose sum is σ = 37507008. Its totient is φ = 16073856.

The previous prime is 25394881. The next prime is 25394917. The reversal of 25394915 is 51949352.

It is a cyclic number.

It is not a de Polignac number, because 25394915 - 2⁶ = 25394851 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25394917) 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, 27452 + ... + 28361.

It is an arithmetic number, because the mean of its divisors is an integer number (2344188).

Almost surely, 2^25394915 is an apocalyptic number.

25394915 is a deficient number, since it is larger than the sum of its proper divisors (12112093).

25394915 is a wasteful number, since it uses less digits than its factorization.

25394915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55838.

The product of its digits is 48600, while the sum is 38.

The square root of 25394915 is about 5039.3367619162. The cubic root of 25394915 is about 293.9333884291.

The spelling of 25394915 in words is "twenty-five million, three hundred ninety-four thousand, nine hundred fifteen".