20125265 has 4 divisors (see below), whose sum is σ = 24150324. Its totient is φ = 16100208.

The previous prime is 20125249. The next prime is 20125267. The reversal of 20125265 is 56252102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56252102 = 2 ⋅28126051.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 11262736 = 2977^2 + 3356^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125265 - 2⁴ = 20125249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20125265.

It is not an unprimeable number, because it can be changed into a prime (20125267) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2012522 + ... + 2012531.

It is an arithmetic number, because the mean of its divisors is an integer number (6037581).

Almost surely, 2^20125265 is an apocalyptic number.

It is an amenable number.

20125265 is a deficient number, since it is larger than the sum of its proper divisors (4025059).

20125265 is an equidigital number, since it uses as much as digits as its factorization.

20125265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025058.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20125265 is about 4486.1191468796. The cubic root of 20125265 is about 272.0072851639.

Adding to 20125265 its reverse (56252102), we get a palindrome (76377367).

The spelling of 20125265 in words is "twenty million, one hundred twenty-five thousand, two hundred sixty-five".