251240453253 has 24 divisors (see below), whose sum is σ = 378055117440. Its totient is φ = 160638776640.

The previous prime is 251240453239. The next prime is 251240453293. The reversal of 251240453253 is 352354042152.

251240453253 is a `hidden beast` number, since 2 + 51 + 24 + 0 + 4 + 532 + 53 = 666.

251240453253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 251240453253 - 2⁹ = 251240452741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251240453293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5748301 + ... + 5791842.

It is an arithmetic number, because the mean of its divisors is an integer number (15752296560).

Almost surely, 2^251240453253 is an apocalyptic number.

It is an amenable number.

251240453253 is a deficient number, since it is larger than the sum of its proper divisors (126814664187).

251240453253 is a wasteful number, since it uses less digits than its factorization.

251240453253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540249 (or 11540246 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 251240453253 in words is "two hundred fifty-one billion, two hundred forty million, four hundred fifty-three thousand, two hundred fifty-three".