251251315152 has 80 divisors (see below), whose sum is σ = 677758525440. Its totient is φ = 80053243776.

The previous prime is 251251315141. The next prime is 251251315181. The reversal of 251251315152 is 251513152152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518849 + ... + 1676127.

It is an arithmetic number, because the mean of its divisors is an integer number (8471981568).

Almost surely, 2^251251315152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251251315152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338879262720).

251251315152 is an abundant number, since it is smaller than the sum of its proper divisors (426507210288).

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

251251315152 is a wasteful number, since it uses less digits than its factorization.

251251315152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158760 (or 158754 counting only the distinct ones).

The product of its digits is 15000, while the sum is 33.

The spelling of 251251315152 in words is "two hundred fifty-one billion, two hundred fifty-one million, three hundred fifteen thousand, one hundred fifty-two".