251420214032552 has 16 divisors (see below), whose sum is σ = 499143071976660. Its totient is φ = 118315394838784.

The previous prime is 251420214032539. The next prime is 251420214032557. The reversal of 251420214032552 is 255230412024152.

It can be written as a sum of positive squares in 2 ways, for example, as 248899403690116 + 2520810342436 = 15776546^2 + 1587706^2 .

It is a super-2 number, since 2×251420214032552² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (251420214032557) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 924339022043 + ... + 924339022314.

Almost surely, 2^{251420214032552} is an apocalyptic number.

It is an amenable number.

251420214032552 is a deficient number, since it is larger than the sum of its proper divisors (247722857944108).

251420214032552 is a wasteful number, since it uses less digits than its factorization.

251420214032552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848678044380 (or 1848678044376 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 251420214032552 in words is "two hundred fifty-one trillion, four hundred twenty billion, two hundred fourteen million, thirty-two thousand, five hundred fifty-two".