1013256205 has 8 divisors (see below), whose sum is σ = 1309438872. Its totient is φ = 748250688.

The previous prime is 1013256203. The next prime is 1013256227. The reversal of 1013256205 is 5026523101.

It can be written as a sum of positive squares in 4 ways, for example, as 62520649 + 950735556 = 7907^2 + 30834^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1013256205 - 2¹ = 1013256203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013256205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013256203) 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, 7794214 + ... + 7794343.

It is an arithmetic number, because the mean of its divisors is an integer number (163679859).

Almost surely, 2^1013256205 is an apocalyptic number.

It is an amenable number.

1013256205 is a deficient number, since it is larger than the sum of its proper divisors (296182667).

1013256205 is a wasteful number, since it uses less digits than its factorization.

1013256205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15588575.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1013256205 is about 31831.6855507213. The cubic root of 1013256205 is about 1004.3993523171.

Adding to 1013256205 its reverse (5026523101), we get a palindrome (6039779306).

The spelling of 1013256205 in words is "one billion, thirteen million, two hundred fifty-six thousand, two hundred five".