251761250263260 has 96 divisors (see below), whose sum is σ = 721361113304832. Its totient is φ = 65571763622400.

The previous prime is 251761250263241. The next prime is 251761250263417. The reversal of 251761250263260 is 62362052167152.

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 31 ways as a sum of consecutive naturals, for example, 49703307 + ... + 54533853.

It is an arithmetic number, because the mean of its divisors is an integer number (7514178263592).

Almost surely, 2^{251761250263260} is an apocalyptic number.

251761250263260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251761250263260 is an abundant number, since it is smaller than the sum of its proper divisors (469599863041572).

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

251761250263260 is a wasteful number, since it uses less digits than its factorization.

251761250263260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850803 (or 4850801 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 251761250263260 in words is "two hundred fifty-one trillion, seven hundred sixty-one billion, two hundred fifty million, two hundred sixty-three thousand, two hundred sixty".