1252737631 has 2 divisors, whose sum is σ = 1252737632. Its totient is φ = 1252737630.

The previous prime is 1252737623. The next prime is 1252737677. The reversal of 1252737631 is 1367372521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252737631 - 2³ = 1252737623 is a prime.

It is a super-2 number, since 2×1252737631² = 3138703144246984322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252737691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626368815 + 626368816.

It is an arithmetic number, because the mean of its divisors is an integer number (626368816).

Almost surely, 2^1252737631 is an apocalyptic number.

1252737631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252737631 is an equidigital number, since it uses as much as digits as its factorization.

1252737631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 1252737631 is about 35394.0338334019. The cubic root of 1252737631 is about 1078.0031779020.

The spelling of 1252737631 in words is "one billion, two hundred fifty-two million, seven hundred thirty-seven thousand, six hundred thirty-one".