251012325042140 has 24 divisors (see below), whose sum is σ = 527128153181280. Its totient is φ = 100404497523008.

The previous prime is 251012325042113. The next prime is 251012325042151. The reversal of 251012325042140 is 41240523210152.

It is a junction number, because it is equal to n+sod(n) for n = 251012325042097 and 251012325042106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22251107 + ... + 31577466.

It is an arithmetic number, because the mean of its divisors is an integer number (21963673049220).

Almost surely, 2^{251012325042140} is an apocalyptic number.

251012325042140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251012325042140 is an abundant number, since it is smaller than the sum of its proper divisors (276115828139140).

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

251012325042140 is a wasteful number, since it uses less digits than its factorization.

251012325042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54061741 (or 54061739 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 251012325042140 its reverse (41240523210152), we get a palindrome (292252848252292).

The spelling of 251012325042140 in words is "two hundred fifty-one trillion, twelve billion, three hundred twenty-five million, forty-two thousand, one hundred forty".