20625201 has 12 divisors (see below), whose sum is σ = 30201028. Its totient is φ = 13561344.

The previous prime is 20625197. The next prime is 20625217. The reversal of 20625201 is 10252602.

20625201 is a `hidden beast` number, since 20 + 625 + 20 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17438976 + 3186225 = 4176^2 + 1785^2 .

It is not a de Polignac number, because 20625201 - 2² = 20625197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625271) 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, 15040 + ... + 16353.

Almost surely, 2^20625201 is an apocalyptic number.

It is an amenable number.

20625201 is a deficient number, since it is larger than the sum of its proper divisors (9575827).

20625201 is a wasteful number, since it uses less digits than its factorization.

20625201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31472 (or 31469 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20625201 is about 4541.4976604640. The cubic root of 20625201 is about 274.2412184843.

Adding to 20625201 its reverse (10252602), we get a palindrome (30877803).

The spelling of 20625201 in words is "twenty million, six hundred twenty-five thousand, two hundred one".