251006260 has 12 divisors (see below), whose sum is σ = 527113188. Its totient is φ = 100402496.

The previous prime is 251006227. The next prime is 251006263. The reversal of 251006260 is 62600152.

It can be written as a sum of positive squares in 2 ways, for example, as 117418896 + 133587364 = 10836^2 + 11558^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251006263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6275137 + ... + 6275176.

It is an arithmetic number, because the mean of its divisors is an integer number (43926099).

Almost surely, 2^251006260 is an apocalyptic number.

251006260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251006260 is an abundant number, since it is smaller than the sum of its proper divisors (276106928).

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

251006260 is a wasteful number, since it uses less digits than its factorization.

251006260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12550322 (or 12550320 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 251006260 is about 15843.1770803712. The cubic root of 251006260 is about 630.8045989183.

The spelling of 251006260 in words is "two hundred fifty-one million, six thousand, two hundred sixty".