249990378851125 has 64 divisors (see below), whose sum is σ = 349601256576000. Its totient is φ = 176914282176000.

The previous prime is 249990378851113. The next prime is 249990378851141. The reversal of 249990378851125 is 521158873099942.

249990378851125 is a nontrivial binomial coefficient, being equal to C(22360250, 2).

It is not a de Polignac number, because 249990378851125 - 2⁹ = 249990378850613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1 + ... + 22360249.

It is an arithmetic number, because the mean of its divisors is an integer number (5462519634000).

Almost surely, 2^{249990378851125} is an apocalyptic number.

249990378851125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249990378851125 is the 22360249-th triangular number and also the 11180125-th hexagonal number.

249990378851125 is the 7453417-th centered nonagonal number.

It is an amenable number.

249990378851125 is a deficient number, since it is larger than the sum of its proper divisors (99610877724875).

249990378851125 is a wasteful number, since it uses less digits than its factorization.

249990378851125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22360495 (or 22360485 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 73.

The spelling of 249990378851125 in words is "two hundred forty-nine trillion, nine hundred ninety billion, three hundred seventy-eight million, eight hundred fifty-one thousand, one hundred twenty-five".