201250665 has 72 divisors (see below), whose sum is σ = 436722624. Its totient is φ = 83289600.

The previous prime is 201250661. The next prime is 201250697. The reversal of 201250665 is 566052102.

It is not a de Polignac number, because 201250665 - 2² = 201250661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201250661) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 834945 + ... + 835185.

It is an arithmetic number, because the mean of its divisors is an integer number (6065592).

Almost surely, 2^201250665 is an apocalyptic number.

It is an amenable number.

201250665 is an abundant number, since it is smaller than the sum of its proper divisors (235471959).

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

201250665 is a wasteful number, since it uses less digits than its factorization.

201250665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 201250665 is about 14186.2843972620. The cubic root of 201250665 is about 586.0200044035.

The spelling of 201250665 in words is "two hundred one million, two hundred fifty thousand, six hundred sixty-five".