20125783 has 4 divisors (see below), whose sum is σ = 20183800. Its totient is φ = 20067768.

The previous prime is 20125751. The next prime is 20125799. The reversal of 20125783 is 38752102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20125783 - 2⁵ = 20125751 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 (20125723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28485 + ... + 29182.

It is an arithmetic number, because the mean of its divisors is an integer number (5045950).

Almost surely, 2^20125783 is an apocalyptic number.

20125783 is a deficient number, since it is larger than the sum of its proper divisors (58017).

20125783 is an equidigital number, since it uses as much as digits as its factorization.

20125783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58016.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20125783 is about 4486.1768801508. The cubic root of 20125783 is about 272.0096188568.

Adding to 20125783 its reverse (38752102), we get a palindrome (58877885).

The spelling of 20125783 in words is "twenty million, one hundred twenty-five thousand, seven hundred eighty-three".