1265606992 has 40 divisors (see below), whose sum is σ = 2725936640. Its totient is φ = 565280640.

The previous prime is 1265606989. The next prime is 1265606999. The reversal of 1265606992 is 2996065621.

It is a super-2 number, since 2×1265606992² = 3203522116398576128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265606999) 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, 91692 + ... + 104587.

It is an arithmetic number, because the mean of its divisors is an integer number (68148416).

Almost surely, 2^1265606992 is an apocalyptic number.

It is an amenable number.

1265606992 is an abundant number, since it is smaller than the sum of its proper divisors (1460329648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265606992 is a wasteful number, since it uses less digits than its factorization.

1265606992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196331 (or 196325 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1265606992 is about 35575.3705813446. The cubic root of 1265606992 is about 1081.6820474286.

The spelling of 1265606992 in words is "one billion, two hundred sixty-five million, six hundred six thousand, nine hundred ninety-two".