20137265 has 8 divisors (see below), whose sum is σ = 25586280. Its totient is φ = 15162112.

The previous prime is 20137253. The next prime is 20137289. The reversal of 20137265 is 56273102.

It can be written as a sum of positive squares in 4 ways, for example, as 388129 + 19749136 = 623^2 + 4444^2 .

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 20137265 - 2¹⁰ = 20136241 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118370 + ... + 118539.

It is an arithmetic number, because the mean of its divisors is an integer number (3198285).

Almost surely, 2^20137265 is an apocalyptic number.

It is an amenable number.

20137265 is a deficient number, since it is larger than the sum of its proper divisors (5449015).

20137265 is a wasteful number, since it uses less digits than its factorization.

20137265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236931.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20137265 is about 4487.4564064735. The cubic root of 20137265 is about 272.0613372701.

It can be divided in two parts, 20137 and 265, that added together give a palindrome (20402).

The spelling of 20137265 in words is "twenty million, one hundred thirty-seven thousand, two hundred sixty-five".