11265251280 has 80 divisors (see below), whose sum is σ = 36976544064. Its totient is φ = 2827356160.

The previous prime is 11265251279. The next prime is 11265251299. The reversal of 11265251280 is 8215256211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376466 + ... + 1384625.

Almost surely, 2^11265251280 is an apocalyptic number.

11265251280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11265251280 is an abundant number, since it is smaller than the sum of its proper divisors (25711292784).

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

11265251280 is a wasteful number, since it uses less digits than its factorization.

11265251280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761124 (or 2761118 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 11265251280 in words is "eleven billion, two hundred sixty-five million, two hundred fifty-one thousand, two hundred eighty".