1252218886 has 4 divisors (see below), whose sum is σ = 1878328332. Its totient is φ = 626109442.

The previous prime is 1252218853. The next prime is 1252218887. The reversal of 1252218886 is 6888122521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252218887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313054720 + ... + 313054723.

It is an arithmetic number, because the mean of its divisors is an integer number (469582083).

Almost surely, 2^1252218886 is an apocalyptic number.

1252218886 is a deficient number, since it is larger than the sum of its proper divisors (626109446).

1252218886 is an equidigital number, since it uses as much as digits as its factorization.

1252218886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626109445.

The product of its digits is 122880, while the sum is 43.

The square root of 1252218886 is about 35386.7049327851. The cubic root of 1252218886 is about 1077.8543609032.

The spelling of 1252218886 in words is "one billion, two hundred fifty-two million, two hundred eighteen thousand, eight hundred eighty-six".