25613138411850 has 144 divisors (see below), whose sum is σ = 72072409570560. Its totient is φ = 6008947296000.

The previous prime is 25613138411801. The next prime is 25613138411869. The reversal of 25613138411850 is 5811483131652.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25613138411850.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 22198515 + ... + 23323814.

It is an arithmetic number, because the mean of its divisors is an integer number (500502844240).

Almost surely, 2^{25613138411850} is an apocalyptic number.

25613138411850 is an abundant number, since it is smaller than the sum of its proper divisors (46459271158710).

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

25613138411850 is a wasteful number, since it uses less digits than its factorization.

25613138411850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45522397 (or 45522381 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 25613138411850 in words is "twenty-five trillion, six hundred thirteen billion, one hundred thirty-eight million, four hundred eleven thousand, eight hundred fifty".