25525925279 has 8 divisors (see below), whose sum is σ = 25563287952. Its totient is φ = 25488590400.

The previous prime is 25525925209. The next prime is 25525925287. The reversal of 25525925279 is 97252952552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25525925279 is a prime.

It is a super-2 number, since 2×25525925279² (a number of 22 digits) contains 22 as substring.

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 25525925279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525925209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402579 + ... + 2413179.

It is an arithmetic number, because the mean of its divisors is an integer number (3195410994).

Almost surely, 2^25525925279 is an apocalyptic number.

25525925279 is a deficient number, since it is larger than the sum of its proper divisors (37362673).

25525925279 is a wasteful number, since it uses less digits than its factorization.

25525925279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13897.

The product of its digits is 5670000, while the sum is 53.

The spelling of 25525925279 in words is "twenty-five billion, five hundred twenty-five million, nine hundred twenty-five thousand, two hundred seventy-nine".