1265013875 has 8 divisors (see below), whose sum is σ = 1578737472. Its totient is φ = 1012011000.

The previous prime is 1265013859. The next prime is 1265013923. The reversal of 1265013875 is 5783105621.

It is not a de Polignac number, because 1265013875 - 2⁴ = 1265013859 is a prime.

It is a Duffinian 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, 5059931 + ... + 5060180.

It is an arithmetic number, because the mean of its divisors is an integer number (197342184).

Almost surely, 2^1265013875 is an apocalyptic number.

1265013875 is a deficient number, since it is larger than the sum of its proper divisors (313723597).

1265013875 is an equidigital number, since it uses as much as digits as its factorization.

1265013875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120126 (or 10120116 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 1265013875 is about 35567.0335423127. The cubic root of 1265013875 is about 1081.5130470300.

The spelling of 1265013875 in words is "one billion, two hundred sixty-five million, thirteen thousand, eight hundred seventy-five".