251205425152 has 96 divisors (see below), whose sum is σ = 552983230800. Its totient is φ = 113135616000.

The previous prime is 251205425143. The next prime is 251205425171. The reversal of 251205425152 is 251524502152.

It is a super-3 number, since 3×251205425152³ (a number of 35 digits) contains 333 as substring.

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, 2404402 + ... + 2506702.

Almost surely, 2^251205425152 is an apocalyptic number.

251205425152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251205425152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276491615400).

251205425152 is an abundant number, since it is smaller than the sum of its proper divisors (301777805648).

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

251205425152 is a wasteful number, since it uses less digits than its factorization.

251205425152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102443 (or 102423 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 251205425152 in words is "two hundred fifty-one billion, two hundred five million, four hundred twenty-five thousand, one hundred fifty-two".