1252235969 has 2 divisors, whose sum is σ = 1252235970. Its totient is φ = 1252235968.

The previous prime is 1252235951. The next prime is 1252236019. The reversal of 1252235969 is 9695322521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749938225 + 502297744 = 27385^2 + 22412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252235969 - 2²⁸ = 983800513 is a prime.

It is a super-2 number, since 2×1252235969² = 3136189844114737922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252235939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626117984 + 626117985.

It is an arithmetic number, because the mean of its divisors is an integer number (626117985).

Almost surely, 2^1252235969 is an apocalyptic number.

It is an amenable number.

1252235969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252235969 is an equidigital number, since it uses as much as digits as its factorization.

1252235969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 44.

The square root of 1252235969 is about 35386.9463079255. The cubic root of 1252235969 is about 1077.8592623100.

The spelling of 1252235969 in words is "one billion, two hundred fifty-two million, two hundred thirty-five thousand, nine hundred sixty-nine".