1263875125 has 8 divisors (see below), whose sum is σ = 1577316312. Its totient is φ = 1011100000.

The previous prime is 1263875089. The next prime is 1263875159. The reversal of 1263875125 is 5215783621.

It can be written as a sum of positive squares in 4 ways, for example, as 21594609 + 1242280516 = 4647^2 + 35246^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1263875125 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 5055376 + ... + 5055625.

It is an arithmetic number, because the mean of its divisors is an integer number (197164539).

Almost surely, 2^1263875125 is an apocalyptic number.

It is an amenable number.

1263875125 is a deficient number, since it is larger than the sum of its proper divisors (313441187).

1263875125 is an equidigital number, since it uses as much as digits as its factorization.

1263875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111016 (or 10111006 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 1263875125 is about 35551.0214339898. The cubic root of 1263875125 is about 1081.1884280040.

The spelling of 1263875125 in words is "one billion, two hundred sixty-three million, eight hundred seventy-five thousand, one hundred twenty-five".