25616417 has 4 divisors (see below), whose sum is σ = 25851540. Its totient is φ = 25381296.

The previous prime is 25616413. The next prime is 25616419. The reversal of 25616417 is 71461652.

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 13512976 + 12103441 = 3676^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 25616417 - 2² = 25616413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25616413) 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, 117398 + ... + 117615.

It is an arithmetic number, because the mean of its divisors is an integer number (6462885).

Almost surely, 2^25616417 is an apocalyptic number.

It is an amenable number.

25616417 is a deficient number, since it is larger than the sum of its proper divisors (235123).

25616417 is a wasteful number, since it uses less digits than its factorization.

25616417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235122.

The product of its digits is 10080, while the sum is 32.

The square root of 25616417 is about 5061.2663435152. The cubic root of 25616417 is about 294.7855072050.

The spelling of 25616417 in words is "twenty-five million, six hundred sixteen thousand, four hundred seventeen".