1252736669 has 2 divisors, whose sum is σ = 1252736670. Its totient is φ = 1252736668.

The previous prime is 1252736659. The next prime is 1252736689. The reversal of 1252736669 is 9666372521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758341444 + 494395225 = 27538^2 + 22235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252736669 - 2⁸ = 1252736413 is a prime.

It is a super-2 number, since 2×1252736669² = 3138698323714431122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252736659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626368334 + 626368335.

It is an arithmetic number, because the mean of its divisors is an integer number (626368335).

Almost surely, 2^1252736669 is an apocalyptic number.

It is an amenable number.

1252736669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252736669 is an equidigital number, since it uses as much as digits as its factorization.

1252736669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 1252736669 is about 35394.0202435383. The cubic root of 1252736669 is about 1078.0029019626.

The spelling of 1252736669 in words is "one billion, two hundred fifty-two million, seven hundred thirty-six thousand, six hundred sixty-nine".