25171967 has 8 divisors (see below), whose sum is σ = 25721136. Its totient is φ = 24628032.

The previous prime is 25171963. The next prime is 25171981. The reversal of 25171967 is 76917152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25171967 - 2² = 25171963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25171967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25171961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9323 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (3215142).

Almost surely, 2^25171967 is an apocalyptic number.

25171967 is a deficient number, since it is larger than the sum of its proper divisors (549169).

25171967 is a wasteful number, since it uses less digits than its factorization.

25171967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617.

The product of its digits is 26460, while the sum is 38.

The square root of 25171967 is about 5017.1672286261. The cubic root of 25171967 is about 293.0706884856.

The spelling of 25171967 in words is "twenty-five million, one hundred seventy-one thousand, nine hundred sixty-seven".