1085258655 has 112 divisors (see below), whose sum is σ = 2163090720. Its totient is φ = 519001344.

The previous prime is 1085258651. The next prime is 1085258659. The reversal of 1085258655 is 5568525801.

1085258655 is a `hidden beast` number, since 10 + 8 + 5 + 2 + 586 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (1085258651) and next prime (1085258659).

It is not a de Polignac number, because 1085258655 - 2² = 1085258651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1085258655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085258651) 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 111 ways as a sum of consecutive naturals, for example, 1752936 + ... + 1753554.

It is an arithmetic number, because the mean of its divisors is an integer number (19313310).

Almost surely, 2^1085258655 is an apocalyptic number.

1085258655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1085258655 is a deficient number, since it is larger than the sum of its proper divisors (1077832065).

1085258655 is an equidigital number, since it uses as much as digits as its factorization.

1085258655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 45.

The square root of 1085258655 is about 32943.2641825305. The cubic root of 1085258655 is about 1027.6480899026.

The spelling of 1085258655 in words is "one billion, eighty-five million, two hundred fifty-eight thousand, six hundred fifty-five".