1252901266663 has 2 divisors, whose sum is σ = 1252901266664. Its totient is φ = 1252901266662.

The previous prime is 1252901266571. The next prime is 1252901266699. The reversal of 1252901266663 is 3666621092521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252901266663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252901266363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626450633331 + 626450633332.

It is an arithmetic number, because the mean of its divisors is an integer number (626450633332).

Almost surely, 2^{1252901266663} is an apocalyptic number.

1252901266663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252901266663 is an equidigital number, since it uses as much as digits as its factorization.

1252901266663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 1252901266663 in words is "one trillion, two hundred fifty-two billion, nine hundred one million, two hundred sixty-six thousand, six hundred sixty-three".