1265073013 has 8 divisors (see below), whose sum is σ = 1276339680. Its totient is φ = 1253853360.

The previous prime is 1265073001. The next prime is 1265073023. The reversal of 1265073013 is 3103705621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1265073013 - 2⁵ = 1265072981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265073023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43443 + ... + 66463.

It is an arithmetic number, because the mean of its divisors is an integer number (159542460).

Almost surely, 2^1265073013 is an apocalyptic number.

It is an amenable number.

1265073013 is a deficient number, since it is larger than the sum of its proper divisors (11266667).

1265073013 is a wasteful number, since it uses less digits than its factorization.

1265073013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23507.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1265073013 is about 35567.8648923435. The cubic root of 1265073013 is about 1081.5298999471.

Adding to 1265073013 its reverse (3103705621), we get a palindrome (4368778634).

The spelling of 1265073013 in words is "one billion, two hundred sixty-five million, seventy-three thousand, thirteen".