1268819625 has 16 divisors (see below), whose sum is σ = 2111316480. Its totient is φ = 676703600.

The previous prime is 1268819597. The next prime is 1268819627. The reversal of 1268819625 is 5269188621.

It is not a de Polignac number, because 1268819625 - 2¹² = 1268815529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268819627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691385 + ... + 1692134.

It is an arithmetic number, because the mean of its divisors is an integer number (131957280).

Almost surely, 2^1268819625 is an apocalyptic number.

1268819625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1268819625 is a deficient number, since it is larger than the sum of its proper divisors (842496855).

1268819625 is an equidigital number, since it uses as much as digits as its factorization.

1268819625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383537 (or 3383527 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 1268819625 is about 35620.4944519303. The cubic root of 1268819625 is about 1082.5965259448.

The spelling of 1268819625 in words is "one billion, two hundred sixty-eight million, eight hundred nineteen thousand, six hundred twenty-five".