1265254611 has 16 divisors (see below), whose sum is σ = 1696730400. Its totient is φ = 838656000.

The previous prime is 1265254583. The next prime is 1265254621. The reversal of 1265254611 is 1164525621.

It is not a de Polignac number, because 1265254611 - 2¹³ = 1265246419 is a prime.

It is a super-2 number, since 2×1265254611² = 3201738461313522642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1265254621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420111 + ... + 423111.

It is an arithmetic number, because the mean of its divisors is an integer number (106045650).

Almost surely, 2^1265254611 is an apocalyptic number.

1265254611 is a deficient number, since it is larger than the sum of its proper divisors (431475789).

1265254611 is a wasteful number, since it uses less digits than its factorization.

1265254611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766.

The product of its digits is 14400, while the sum is 33.

The square root of 1265254611 is about 35570.4176388189. The cubic root of 1265254611 is about 1081.5816477561.

The spelling of 1265254611 in words is "one billion, two hundred sixty-five million, two hundred fifty-four thousand, six hundred eleven".