25424122917 has 8 divisors (see below), whose sum is σ = 33900749280. Its totient is φ = 16948455920.

The previous prime is 25424122877. The next prime is 25424122921. The reversal of 25424122917 is 71922142452.

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 25424122917 - 2¹⁰ = 25424121893 is a prime.

It is a super-3 number, since 3×25424122917³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25424122957) 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, 175542 + ... + 285767.

It is an arithmetic number, because the mean of its divisors is an integer number (4237593660).

Almost surely, 2^25424122917 is an apocalyptic number.

It is an amenable number.

25424122917 is a deficient number, since it is larger than the sum of its proper divisors (8476626363).

25424122917 is a wasteful number, since it uses less digits than its factorization.

25424122917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479683.

The product of its digits is 80640, while the sum is 39.

The spelling of 25424122917 in words is "twenty-five billion, four hundred twenty-four million, one hundred twenty-two thousand, nine hundred seventeen".