1081725815 has 8 divisors (see below), whose sum is σ = 1299587280. Its totient is φ = 864369792.

The previous prime is 1081725763. The next prime is 1081725823. The reversal of 1081725815 is 5185271801.

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 1081725815 - 2⁶ = 1081725751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121634 + ... + 130223.

It is an arithmetic number, because the mean of its divisors is an integer number (162448410).

Almost surely, 2^1081725815 is an apocalyptic number.

1081725815 is a deficient number, since it is larger than the sum of its proper divisors (217861465).

1081725815 is an equidigital number, since it uses as much as digits as its factorization.

1081725815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252721.

The product of its (nonzero) digits is 22400, while the sum is 38.

The square root of 1081725815 is about 32889.6004080317. The cubic root of 1081725815 is about 1026.5317775618.

The spelling of 1081725815 in words is "one billion, eighty-one million, seven hundred twenty-five thousand, eight hundred fifteen".