1252564023 has 4 divisors (see below), whose sum is σ = 1670085368. Its totient is φ = 835042680.

The previous prime is 1252564013. The next prime is 1252564031. The reversal of 1252564023 is 3204652521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1252564023 - 2³⁰ = 178822199 is a prime.

It is a super-3 number, since 3×1252564023³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252564013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208760668 + ... + 208760673.

It is an arithmetic number, because the mean of its divisors is an integer number (417521342).

Almost surely, 2^1252564023 is an apocalyptic number.

1252564023 is a deficient number, since it is larger than the sum of its proper divisors (417521345).

1252564023 is an equidigital number, since it uses as much as digits as its factorization.

1252564023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417521344.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1252564023 is about 35391.5812446972. The cubic root of 1252564023 is about 1077.9533780033.

The spelling of 1252564023 in words is "one billion, two hundred fifty-two million, five hundred sixty-four thousand, twenty-three".