250231891440 has 40 divisors (see below), whose sum is σ = 775718864208. Its totient is φ = 66728504320.

The previous prime is 250231891411. The next prime is 250231891453. The reversal of 250231891440 is 44198132052.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 521316201 + ... + 521316680.

Almost surely, 2^250231891440 is an apocalyptic number.

250231891440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250231891440 is an abundant number, since it is smaller than the sum of its proper divisors (525486972768).

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

250231891440 is a wasteful number, since it uses less digits than its factorization.

250231891440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042632897 (or 1042632891 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 250231891440 in words is "two hundred fifty billion, two hundred thirty-one million, eight hundred ninety-one thousand, four hundred forty".