1252751329 has 2 divisors, whose sum is σ = 1252751330. Its totient is φ = 1252751328.

The previous prime is 1252751303. The next prime is 1252751341. The reversal of 1252751329 is 9231572521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861305104 + 391446225 = 29348^2 + 19785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252751329 - 2¹⁵ = 1252718561 is a prime.

It is a super-2 number, since 2×1252751329² = 3138771784622532482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252757329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626375664 + 626375665.

It is an arithmetic number, because the mean of its divisors is an integer number (626375665).

Almost surely, 2^1252751329 is an apocalyptic number.

It is an amenable number.

1252751329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252751329 is an equidigital number, since it uses as much as digits as its factorization.

1252751329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 1252751329 is about 35394.2273400621. The cubic root of 1252751329 is about 1078.0071070125.

The spelling of 1252751329 in words is "one billion, two hundred fifty-two million, seven hundred fifty-one thousand, three hundred twenty-nine".