25428379615 has 32 divisors (see below), whose sum is σ = 31321728000. Its totient is φ = 19811500800.

The previous prime is 25428379609. The next prime is 25428379631. The reversal of 25428379615 is 51697382452.

It is not a de Polignac number, because 25428379615 - 2³ = 25428379607 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 26681979 + ... + 26682931.

It is an arithmetic number, because the mean of its divisors is an integer number (978804000).

Almost surely, 2^25428379615 is an apocalyptic number.

25428379615 is a deficient number, since it is larger than the sum of its proper divisors (5893348385).

25428379615 is a wasteful number, since it uses less digits than its factorization.

25428379615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767.

The product of its digits is 3628800, while the sum is 52.

The spelling of 25428379615 in words is "twenty-five billion, four hundred twenty-eight million, three hundred seventy-nine thousand, six hundred fifteen".