1252304245531 has 4 divisors (see below), whose sum is σ = 1252410268032. Its totient is φ = 1252198223032.

The previous prime is 1252304245513. The next prime is 1252304245547. The reversal of 1252304245531 is 1355424032521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1252304245531 - 2⁵ = 1252304245499 is a prime.

It is a super-2 number, since 2×1252304245531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252304245561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52993531 + ... + 53017156.

It is an arithmetic number, because the mean of its divisors is an integer number (313102567008).

Almost surely, 2^{1252304245531} is an apocalyptic number.

1252304245531 is a deficient number, since it is larger than the sum of its proper divisors (106022501).

1252304245531 is a wasteful number, since it uses less digits than its factorization.

1252304245531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106022500.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 1252304245531 in words is "one trillion, two hundred fifty-two billion, three hundred four million, two hundred forty-five thousand, five hundred thirty-one".