1285170201 has 12 divisors (see below), whose sum is σ = 2121550912. Its totient is φ = 734382936.

The previous prime is 1285170181. The next prime is 1285170251. The reversal of 1285170201 is 1020715821.

1285170201 is a `hidden beast` number, since 128 + 517 + 0 + 20 + 1 = 666.

It is not a de Polignac number, because 1285170201 - 2⁶ = 1285170137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1285170251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10199701 + ... + 10199826.

Almost surely, 2^1285170201 is an apocalyptic number.

It is an amenable number.

1285170201 is a deficient number, since it is larger than the sum of its proper divisors (836380711).

1285170201 is a wasteful number, since it uses less digits than its factorization.

1285170201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399540 (or 20399537 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1285170201 is about 35849.2705783535. The cubic root of 1285170201 is about 1087.2269665735.

The spelling of 1285170201 in words is "one billion, two hundred eighty-five million, one hundred seventy thousand, two hundred one".