1252948511879 has 8 divisors (see below), whose sum is σ = 1273831125840. Its totient is φ = 1232408149080.

The previous prime is 1252948511839. The next prime is 1252948511891. The reversal of 1252948511879 is 9781158492521.

It is not a de Polignac number, because 1252948511879 - 2⁸ = 1252948511623 is a prime.

It is a super-2 number, since 2×1252948511879² (a number of 25 digits) contains 22 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 (1252948511839) 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 7 ways as a sum of consecutive naturals, for example, 2533049 + ... + 2987010.

It is an arithmetic number, because the mean of its divisors is an integer number (159228890730).

Almost surely, 2^{1252948511879} is an apocalyptic number.

1252948511879 is a deficient number, since it is larger than the sum of its proper divisors (20882613961).

1252948511879 is an frugal number, since it uses more digits than its factorization.

1252948511879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520242 (or 5520120 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 62.

The spelling of 1252948511879 in words is "one trillion, two hundred fifty-two billion, nine hundred forty-eight million, five hundred eleven thousand, eight hundred seventy-nine".