1252065731 has 8 divisors (see below), whose sum is σ = 1431364704. Its totient is φ = 1072874880.

The previous prime is 1252065721. The next prime is 1252065739. The reversal of 1252065731 is 1375602521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1252065731 is a prime.

It is a super-2 number, since 2×1252065731² = 3135337189489128722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252065739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470 + ... + 50043.

It is an arithmetic number, because the mean of its divisors is an integer number (178920588).

Almost surely, 2^1252065731 is an apocalyptic number.

1252065731 is a deficient number, since it is larger than the sum of its proper divisors (179298973).

1252065731 is an equidigital number, since it uses as much as digits as its factorization.

1252065731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54061.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1252065731 is about 35384.5408476640. The cubic root of 1252065731 is about 1077.8104161060.

The spelling of 1252065731 in words is "one billion, two hundred fifty-two million, sixty-five thousand, seven hundred thirty-one".