251272653172 has 12 divisors (see below), whose sum is σ = 458845714656. Its totient is φ = 120173877560.

The previous prime is 251272653143. The next prime is 251272653173. The reversal of 251272653172 is 271356272152.

It is a super-3 number, since 3×251272653172³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251272653173) 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, 1365612154 + ... + 1365612337.

It is an arithmetic number, because the mean of its divisors is an integer number (38237142888).

Almost surely, 2^251272653172 is an apocalyptic number.

It is an amenable number.

251272653172 is a deficient number, since it is larger than the sum of its proper divisors (207573061484).

251272653172 is a wasteful number, since it uses less digits than its factorization.

251272653172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731224518 (or 2731224516 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The spelling of 251272653172 in words is "two hundred fifty-one billion, two hundred seventy-two million, six hundred fifty-three thousand, one hundred seventy-two".