1257852868 has 12 divisors (see below), whose sum is σ = 2211676432. Its totient is φ = 625945320.

The previous prime is 1257852863. The next prime is 1257852881. The reversal of 1257852868 is 8682587521.

It is not an unprimeable number, because it can be changed into a prime (1257852863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744330 + ... + 746017.

Almost surely, 2^1257852868 is an apocalyptic number.

It is an amenable number.

1257852868 is a deficient number, since it is larger than the sum of its proper divisors (953823564).

1257852868 is a wasteful number, since it uses less digits than its factorization.

1257852868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490562 (or 1490560 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 52.

The square root of 1257852868 is about 35466.2215072314. The cubic root of 1257852868 is about 1079.4684364015.

The spelling of 1257852868 in words is "one billion, two hundred fifty-seven million, eight hundred fifty-two thousand, eight hundred sixty-eight".