1265011492 has 12 divisors (see below), whose sum is σ = 2214142336. Its totient is φ = 632399400.

The previous prime is 1265011487. The next prime is 1265011493. The reversal of 1265011492 is 2941105621.

It is not an unprimeable number, because it can be changed into a prime (1265011493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4117 + ... + 50467.

Almost surely, 2^1265011492 is an apocalyptic number.

It is an amenable number.

1265011492 is a deficient number, since it is larger than the sum of its proper divisors (949130844).

1265011492 is a wasteful number, since it uses less digits than its factorization.

1265011492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53178 (or 53176 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1265011492 is about 35567.0000421739. Note that the first 4 decimals coincide. The cubic root of 1265011492 is about 1081.5123679210.

It can be divided in two parts, 12650 and 11492, that added together give a palindrome (24142).

The spelling of 1265011492 in words is "one billion, two hundred sixty-five million, eleven thousand, four hundred ninety-two".