201625905 has 32 divisors (see below), whose sum is σ = 355904640. Its totient is φ = 96837120.

The previous prime is 201625901. The next prime is 201625937. The reversal of 201625905 is 509526102.

It is a happy number.

It is not a de Polignac number, because 201625905 - 2² = 201625901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201625901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4615 + ... + 20604.

It is an arithmetic number, because the mean of its divisors is an integer number (11122020).

Almost surely, 2^201625905 is an apocalyptic number.

It is an amenable number.

201625905 is a deficient number, since it is larger than the sum of its proper divisors (154278735).

201625905 is a wasteful number, since it uses less digits than its factorization.

201625905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25281.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 201625905 is about 14199.5036885097. The cubic root of 201625905 is about 586.3839975994.

The spelling of 201625905 in words is "two hundred one million, six hundred twenty-five thousand, nine hundred five".