25396917 has 32 divisors (see below), whose sum is σ = 42712320. Its totient is φ = 13063680.

The previous prime is 25396897. The next prime is 25396927. The reversal of 25396917 is 71969352.

It is not a de Polignac number, because 25396917 - 2¹⁵ = 25364149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25396927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10059 + ... + 12327.

It is an arithmetic number, because the mean of its divisors is an integer number (1334760).

Almost surely, 2^25396917 is an apocalyptic number.

It is an amenable number.

25396917 is a deficient number, since it is larger than the sum of its proper divisors (17315403).

25396917 is a wasteful number, since it uses less digits than its factorization.

25396917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333.

The product of its digits is 102060, while the sum is 42.

The square root of 25396917 is about 5039.5353952522. The cubic root of 25396917 is about 293.9411122743.

The spelling of 25396917 in words is "twenty-five million, three hundred ninety-six thousand, nine hundred seventeen".