251111010260 has 24 divisors (see below), whose sum is σ = 575272496736. Its totient is φ = 91313094560.

The previous prime is 251111010247. The next prime is 251111010307. The reversal of 251111010260 is 62010111152.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 570706622 + ... + 570707061.

It is an arithmetic number, because the mean of its divisors is an integer number (23969687364).

Almost surely, 2^251111010260 is an apocalyptic number.

251111010260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251111010260 is an abundant number, since it is smaller than the sum of its proper divisors (324161486476).

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

251111010260 is a wasteful number, since it uses less digits than its factorization.

251111010260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141413703 (or 1141413701 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The spelling of 251111010260 in words is "two hundred fifty-one billion, one hundred eleven million, ten thousand, two hundred sixty".