1625666201 has 8 divisors (see below), whose sum is σ = 1727843520. Its totient is φ = 1525150512.

The previous prime is 1625666183. The next prime is 1625666227. The reversal of 1625666201 is 1026665261.

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

It is a cyclic number.

It is not a de Polignac number, because 1625666201 - 2¹⁰ = 1625665177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625666281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413390 + ... + 417303.

It is an arithmetic number, because the mean of its divisors is an integer number (215980440).

Almost surely, 2^1625666201 is an apocalyptic number.

It is an amenable number.

1625666201 is a deficient number, since it is larger than the sum of its proper divisors (102177319).

1625666201 is a wasteful number, since it uses less digits than its factorization.

1625666201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830815.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1625666201 is about 40319.5511011717. The cubic root of 1625666201 is about 1175.8279846298.

The spelling of 1625666201 in words is "one billion, six hundred twenty-five million, six hundred sixty-six thousand, two hundred one".