25155117813380 has 24 divisors (see below), whose sum is σ = 53162217143448. Its totient is φ = 9997957651968.

The previous prime is 25155117813347. The next prime is 25155117813391. The reversal of 25155117813380 is 8331871155152.

It can be written as a sum of positive squares in 4 ways, for example, as 627108777604 + 24528009035776 = 791902^2 + 4952576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4005588869 + ... + 4005595148.

It is an arithmetic number, because the mean of its divisors is an integer number (2215092380977).

Almost surely, 2^{25155117813380} is an apocalyptic number.

25155117813380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25155117813380 is an abundant number, since it is smaller than the sum of its proper divisors (28007099330068).

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

25155117813380 is a wasteful number, since it uses less digits than its factorization.

25155117813380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011184183 (or 8011184181 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 50.

The spelling of 25155117813380 in words is "twenty-five trillion, one hundred fifty-five billion, one hundred seventeen million, eight hundred thirteen thousand, three hundred eighty".