25941917 has 4 divisors (see below), whose sum is σ = 25968540. Its totient is φ = 25915296.

The previous prime is 25941913. The next prime is 25941919. The reversal of 25941917 is 71914952.

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 13060996 + 12880921 = 3614^2 + 3589^2 .

It is a cyclic number.

It is not a de Polignac number, because 25941917 - 2² = 25941913 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 (25941913) 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, 11792 + ... + 13817.

It is an arithmetic number, because the mean of its divisors is an integer number (6492135).

Almost surely, 2^25941917 is an apocalyptic number.

It is an amenable number.

25941917 is a deficient number, since it is larger than the sum of its proper divisors (26623).

25941917 is a wasteful number, since it uses less digits than its factorization.

25941917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26622.

The product of its digits is 22680, while the sum is 38.

The square root of 25941917 is about 5093.3208224105. The cubic root of 25941917 is about 296.0288389542.

The spelling of 25941917 in words is "twenty-five million, nine hundred forty-one thousand, nine hundred seventeen".