2251438218875 has 32 divisors (see below), whose sum is σ = 2818768680000. Its totient is φ = 1795401600000.

The previous prime is 2251438218823. The next prime is 2251438218881. The reversal of 2251438218875 is 5788128341522.

2251438218875 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 2251438218875 - 2²⁶ = 2251371110011 is a prime.

It is a super-2 number, since 2×2251438218875² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2251438218875.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174537176 + ... + 174550074.

It is an arithmetic number, because the mean of its divisors is an integer number (88086521250).

Almost surely, 2^{2251438218875} is an apocalyptic number.

2251438218875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2251438218875 is a deficient number, since it is larger than the sum of its proper divisors (567330461125).

2251438218875 is a wasteful number, since it uses less digits than its factorization.

2251438218875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17264 (or 17254 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 56.

The spelling of 2251438218875 in words is "two trillion, two hundred fifty-one billion, four hundred thirty-eight million, two hundred eighteen thousand, eight hundred seventy-five".