251442545530000 has 100 divisors (see below), whose sum is σ = 664110051544368. Its totient is φ = 91433652880000.

The previous prime is 251442545529979. The next prime is 251442545530013. The reversal of 251442545530000 is 35545244152.

251442545530000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×251442545530000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1142810662 + ... + 1143030661.

Almost surely, 2^{251442545530000} is an apocalyptic number.

251442545530000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251442545530000 is an abundant number, since it is smaller than the sum of its proper divisors (412667506014368).

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

251442545530000 is a wasteful number, since it uses less digits than its factorization.

251442545530000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285841362 (or 2285841341 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 251442545530000 in words is "two hundred fifty-one trillion, four hundred forty-two billion, five hundred forty-five million, five hundred thirty thousand".