1265676888 has 128 divisors (see below), whose sum is σ = 3775403520. Its totient is φ = 346045440.

The previous prime is 1265676859. The next prime is 1265676889. The reversal of 1265676888 is 8886765621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265676889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363331 + ... + 366797.

It is an arithmetic number, because the mean of its divisors is an integer number (29495340).

Almost surely, 2^1265676888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265676888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887701760).

1265676888 is an abundant number, since it is smaller than the sum of its proper divisors (2509726632).

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

1265676888 is a wasteful number, since it uses less digits than its factorization.

1265676888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3573 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The square root of 1265676888 is about 35576.3529328120. The cubic root of 1265676888 is about 1081.7019598388.

The spelling of 1265676888 in words is "one billion, two hundred sixty-five million, six hundred seventy-six thousand, eight hundred eighty-eight".