1250565056 has 56 divisors (see below), whose sum is σ = 2684367504. Its totient is φ = 574617600.

The previous prime is 1250564969. The next prime is 1250565059. The reversal of 1250565056 is 6505650521.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250565059) 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, 190631 + ... + 197081.

It is an arithmetic number, because the mean of its divisors is an integer number (47935134).

Almost surely, 2^1250565056 is an apocalyptic number.

1250565056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250565056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342183752).

1250565056 is an abundant number, since it is smaller than the sum of its proper divisors (1433802448).

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

1250565056 is a wasteful number, since it uses less digits than its factorization.

1250565056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709 (or 6699 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1250565056 is about 35363.3292550348. The cubic root of 1250565056 is about 1077.3796373970.

The spelling of 1250565056 in words is "one billion, two hundred fifty million, five hundred sixty-five thousand, fifty-six".