201670025 has 12 divisors (see below), whose sum is σ = 250836624. Its totient is φ = 160842000.

The previous prime is 201669977. The next prime is 201670039. The reversal of 201670025 is 520076102.

It is a de Polignac number, because none of the positive numbers 2^k-201670025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3911 + ... + 20460.

It is an arithmetic number, because the mean of its divisors is an integer number (20903052).

Almost surely, 2^201670025 is an apocalyptic number.

201670025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201670025 is a deficient number, since it is larger than the sum of its proper divisors (49166599).

201670025 is a wasteful number, since it uses less digits than its factorization.

201670025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24712 (or 24707 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 201670025 is about 14201.0571789568. The cubic root of 201670025 is about 586.4267655416.

The spelling of 201670025 in words is "two hundred one million, six hundred seventy thousand, twenty-five".