1525113331 has 4 divisors (see below), whose sum is σ = 1742986672. Its totient is φ = 1307239992.

The previous prime is 1525113329. The next prime is 1525113341. The reversal of 1525113331 is 1333115251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1525113331 - 2¹ = 1525113329 is a prime.

It is a super-2 number, since 2×1525113331² = 4651941344787831122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1525113296 and 1525113305.

It is not an unprimeable number, because it can be changed into a prime (1525113341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 108936660 + ... + 108936673.

It is an arithmetic number, because the mean of its divisors is an integer number (435746668).

Almost surely, 2^1525113331 is an apocalyptic number.

1525113331 is a deficient number, since it is larger than the sum of its proper divisors (217873341).

1525113331 is an equidigital number, since it uses as much as digits as its factorization.

1525113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217873340.

The product of its digits is 1350, while the sum is 25.

The square root of 1525113331 is about 39052.6994073393. The cubic root of 1525113331 is about 1151.0672715810.

Adding to 1525113331 its reverse (1333115251), we get a palindrome (2858228582).

It can be divided in two parts, 15251 and 13331, that added together give a palindrome (28582).

The spelling of 1525113331 in words is "one billion, five hundred twenty-five million, one hundred thirteen thousand, three hundred thirty-one".