1285345522 has 16 divisors (see below), whose sum is σ = 1943391744. Its totient is φ = 637560000.

The previous prime is 1285345517. The next prime is 1285345541. The reversal of 1285345522 is 2255435821.

It is a super-2 number, since 2×1285345522² = 3304226221850904968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263647 + ... + 268477.

It is an arithmetic number, because the mean of its divisors is an integer number (121461984).

Almost surely, 2^1285345522 is an apocalyptic number.

1285345522 is a deficient number, since it is larger than the sum of its proper divisors (658046222).

1285345522 is a wasteful number, since it uses less digits than its factorization.

1285345522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5865.

The product of its digits is 96000, while the sum is 37.

The square root of 1285345522 is about 35851.7157469486. The cubic root of 1285345522 is about 1087.2764036187.

The spelling of 1285345522 in words is "one billion, two hundred eighty-five million, three hundred forty-five thousand, five hundred twenty-two".