1251453706485 has 16 divisors (see below), whose sum is σ = 2020695895680. Its totient is φ = 661318655040.

The previous prime is 1251453706427. The next prime is 1251453706501. The reversal of 1251453706485 is 5846073541521.

It is not a de Polignac number, because 1251453706485 - 2²⁰ = 1251452657909 is a prime.

It is a super-2 number, since 2×1251453706485² (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, 382705921 + ... + 382709190.

It is an arithmetic number, because the mean of its divisors is an integer number (126293493480).

Almost surely, 2^{1251453706485} is an apocalyptic number.

1251453706485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1251453706485 is a deficient number, since it is larger than the sum of its proper divisors (769242189195).

1251453706485 is a wasteful number, since it uses less digits than its factorization.

1251453706485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765415228.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 1251453706485 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-three million, seven hundred six thousand, four hundred eighty-five".