1257263852 has 24 divisors (see below), whose sum is σ = 2427254592. Its totient is φ = 566121600.

The previous prime is 1257263837. The next prime is 1257263867. The reversal of 1257263852 is 2583627521.

It is an interprime number because it is at equal distance from previous prime (1257263837) and next prime (1257263867).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292724 + ... + 296987.

It is an arithmetic number, because the mean of its divisors is an integer number (101135608).

Almost surely, 2^1257263852 is an apocalyptic number.

It is an amenable number.

1257263852 is a deficient number, since it is larger than the sum of its proper divisors (1169990740).

1257263852 is a wasteful number, since it uses less digits than its factorization.

1257263852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589769 (or 589767 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 1257263852 is about 35457.9166336659. The cubic root of 1257263852 is about 1079.2999155121.

The spelling of 1257263852 in words is "one billion, two hundred fifty-seven million, two hundred sixty-three thousand, eight hundred fifty-two".