1251450344255 has 4 divisors (see below), whose sum is σ = 1501740413112. Its totient is φ = 1001160275400.

The previous prime is 1251450344237. The next prime is 1251450344269. The reversal of 1251450344255 is 5524430541521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1251450344255 - 2⁸ = 1251450343999 is a prime.

It is a super-2 number, since 2×1251450344255² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125145034421 + ... + 125145034430.

It is an arithmetic number, because the mean of its divisors is an integer number (375435103278).

Almost surely, 2^{1251450344255} is an apocalyptic number.

1251450344255 is a deficient number, since it is larger than the sum of its proper divisors (250290068857).

1251450344255 is an equidigital number, since it uses as much as digits as its factorization.

1251450344255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250290068856.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 1251450344255 its reverse (5524430541521), we get a palindrome (6775880885776).

The spelling of 1251450344255 in words is "one trillion, two hundred fifty-one billion, four hundred fifty million, three hundred forty-four thousand, two hundred fifty-five".