1285155082 has 8 divisors (see below), whose sum is σ = 1928996352. Its totient is φ = 642156300.

The previous prime is 1285155049. The next prime is 1285155083. The reversal of 1285155082 is 2805515821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1285155083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206794 + ... + 212917.

It is an arithmetic number, because the mean of its divisors is an integer number (241124544).

Almost surely, 2^1285155082 is an apocalyptic number.

1285155082 is a deficient number, since it is larger than the sum of its proper divisors (643841270).

1285155082 is a wasteful number, since it uses less digits than its factorization.

1285155082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421244.

The product of its (nonzero) digits is 32000, while the sum is 37.

The square root of 1285155082 is about 35849.0597087288. The cubic root of 1285155082 is about 1087.2227031047. Note that the first 3 decimals are identical.

The spelling of 1285155082 in words is "one billion, two hundred eighty-five million, one hundred fifty-five thousand, eighty-two".