1251250389255 has 16 divisors (see below), whose sum is σ = 2107369077120. Its totient is φ = 632210722848.

The previous prime is 1251250389091. The next prime is 1251250389287. The reversal of 1251250389255 is 5529830521521.

It is not a de Polignac number, because 1251250389255 - 2²² = 1251246194951 is a prime.

It is a super-2 number, since 2×1251250389255² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2195175837 + ... + 2195176406.

It is an arithmetic number, because the mean of its divisors is an integer number (131710567320).

Almost surely, 2^{1251250389255} is an apocalyptic number.

1251250389255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1251250389255 is a deficient number, since it is larger than the sum of its proper divisors (856118687865).

1251250389255 is a wasteful number, since it uses less digits than its factorization.

1251250389255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390352270.

The product of its (nonzero) digits is 1080000, while the sum is 48.

The spelling of 1251250389255 in words is "one trillion, two hundred fifty-one billion, two hundred fifty million, three hundred eighty-nine thousand, two hundred fifty-five".