1251412453 has 4 divisors (see below), whose sum is σ = 1251496620. Its totient is φ = 1251328288.

The previous prime is 1251412429. The next prime is 1251412469. The reversal of 1251412453 is 3542141521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1090452484 + 160959969 = 33022^2 + 12687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1251412453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251412493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13150 + ... + 51727.

It is an arithmetic number, because the mean of its divisors is an integer number (312874155).

Almost surely, 2^1251412453 is an apocalyptic number.

It is an amenable number.

1251412453 is a deficient number, since it is larger than the sum of its proper divisors (84167).

1251412453 is an equidigital number, since it uses as much as digits as its factorization.

1251412453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84166.

The product of its digits is 4800, while the sum is 28.

The square root of 1251412453 is about 35375.3085216228. The cubic root of 1251412453 is about 1077.6229306543.

Adding to 1251412453 its reverse (3542141521), we get a palindrome (4793553974).

The spelling of 1251412453 in words is "one billion, two hundred fifty-one million, four hundred twelve thousand, four hundred fifty-three".