1285835355 has 96 divisors (see below), whose sum is σ = 2798115840. Its totient is φ = 532604160.

The previous prime is 1285835339. The next prime is 1285835377. The reversal of 1285835355 is 5535385821.

1285835355 is a `hidden beast` number, since 12 + 8 + 583 + 5 + 3 + 55 = 666.

It is not a de Polignac number, because 1285835355 - 2⁴ = 1285835339 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 1285835355.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 132985 + ... + 142325.

It is an arithmetic number, because the mean of its divisors is an integer number (29147040).

Almost surely, 2^1285835355 is an apocalyptic number.

1285835355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1285835355 is an abundant number, since it is smaller than the sum of its proper divisors (1512280485).

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

1285835355 is a wasteful number, since it uses less digits than its factorization.

1285835355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9401 (or 9398 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 1285835355 is about 35858.5464708206. The cubic root of 1285835355 is about 1087.4145029892.

The spelling of 1285835355 in words is "one billion, two hundred eighty-five million, eight hundred thirty-five thousand, three hundred fifty-five".