251400040375 has 32 divisors (see below), whose sum is σ = 342566205696. Its totient is φ = 182678020000.

The previous prime is 251400040301. The next prime is 251400040427. The reversal of 251400040375 is 573040004152.

It is a de Polignac number, because none of the positive numbers 2^k-251400040375 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1520520 + ... + 1677730.

It is an arithmetic number, because the mean of its divisors is an integer number (10705193928).

Almost surely, 2^251400040375 is an apocalyptic number.

251400040375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

251400040375 is a deficient number, since it is larger than the sum of its proper divisors (91166165321).

251400040375 is a wasteful number, since it uses less digits than its factorization.

251400040375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158400 (or 158390 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 251400040375 in words is "two hundred fifty-one billion, four hundred million, forty thousand, three hundred seventy-five".