1251252776503 has 2 divisors, whose sum is σ = 1251252776504. Its totient is φ = 1251252776502.

The previous prime is 1251252776471. The next prime is 1251252776519. The reversal of 1251252776503 is 3056772521521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1251252776503 - 2⁵ = 1251252776471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251252776593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625626388251 + 625626388252.

It is an arithmetic number, because the mean of its divisors is an integer number (625626388252).

Almost surely, 2^{1251252776503} is an apocalyptic number.

1251252776503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251252776503 is an equidigital number, since it uses as much as digits as its factorization.

1251252776503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 1251252776503 in words is "one trillion, two hundred fifty-one billion, two hundred fifty-two million, seven hundred seventy-six thousand, five hundred three".