251453606354152 has 8 divisors (see below), whose sum is σ = 471475511914050. Its totient is φ = 125726803177072.

The previous prime is 251453606354147. The next prime is 251453606354257.

251453606354152 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 237597746610436 + 13855859743716 = 15414206^2 + 3722346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×251453606354152² (a number of 30 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 251453606354152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715850397127 + ... + 15715850397142.

Almost surely, 2^{251453606354152} is an apocalyptic number.

It is an amenable number.

251453606354152 is a deficient number, since it is larger than the sum of its proper divisors (220021905559898).

251453606354152 is a wasteful number, since it uses less digits than its factorization.

251453606354152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31431700794275 (or 31431700794271 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 251453606354152 in words is "two hundred fifty-one trillion, four hundred fifty-three billion, six hundred six million, three hundred fifty-four thousand, one hundred fifty-two".