25979153660 has 24 divisors (see below), whose sum is σ = 56928233376. Its totient is φ = 9939849920.

The previous prime is 25979153647. The next prime is 25979153671. The reversal of 25979153660 is 6635197952.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28237751 + ... + 28238670.

It is an arithmetic number, because the mean of its divisors is an integer number (2372009724).

Almost surely, 2^25979153660 is an apocalyptic number.

25979153660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25979153660 is an abundant number, since it is smaller than the sum of its proper divisors (30949079716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25979153660 is a wasteful number, since it uses less digits than its factorization.

25979153660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56476453 (or 56476451 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 53.

The spelling of 25979153660 in words is "twenty-five billion, nine hundred seventy-nine million, one hundred fifty-three thousand, six hundred sixty".