1205150056 has 64 divisors (see below), whose sum is σ = 2510496000. Its totient is φ = 537788160.

The previous prime is 1205150053. The next prime is 1205150059. The reversal of 1205150056 is 6500515021.

It is an interprime number because it is at equal distance from previous prime (1205150053) and next prime (1205150059).

It is a self number, because there is not a number n which added to its sum of digits gives 1205150056.

It is not an unprimeable number, because it can be changed into a prime (1205150053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591630 + ... + 1592386.

It is an arithmetic number, because the mean of its divisors is an integer number (39226500).

Almost surely, 2^1205150056 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 1205150056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255248000).

1205150056 is an abundant number, since it is smaller than the sum of its proper divisors (1305345944).

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

1205150056 is a wasteful number, since it uses less digits than its factorization.

1205150056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1205150056 is about 34715.2712217548. The cubic root of 1205150056 is about 1064.1766082366.

Adding to 1205150056 its reverse (6500515021), we get a palindrome (7705665077).

The spelling of 1205150056 in words is "one billion, two hundred five million, one hundred fifty thousand, fifty-six".