1265261700 has 36 divisors (see below), whose sum is σ = 3660824720. Its totient is φ = 337403040.

The previous prime is 1265261693. The next prime is 1265261707. The reversal of 1265261700 is 71625621.

1265261700 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1265261693) and next prime (1265261707).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1265261707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2108470 + ... + 2109069.

Almost surely, 2^1265261700 is an apocalyptic number.

1265261700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265261700 is an abundant number, since it is smaller than the sum of its proper divisors (2395563020).

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

1265261700 is a wasteful number, since it uses less digits than its factorization.

1265261700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217556 (or 4217549 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1265261700 is about 35570.5172860896. The cubic root of 1265261700 is about 1081.5836677232.

The spelling of 1265261700 in words is "one billion, two hundred sixty-five million, two hundred sixty-one thousand, seven hundred".