20425113 has 6 divisors (see below), whose sum is σ = 29502954. Its totient is φ = 13616736.

The previous prime is 20425103. The next prime is 20425117. The reversal of 20425113 is 31152402.

It can be written as a sum of positive squares in only one way, i.e., 14722569 + 5702544 = 3837^2 + 2388^2 .

It is not a de Polignac number, because 20425113 - 2⁶ = 20425049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20425117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1134720 + ... + 1134737.

It is an arithmetic number, because the mean of its divisors is an integer number (4917159).

Almost surely, 2^20425113 is an apocalyptic number.

It is an amenable number.

20425113 is a deficient number, since it is larger than the sum of its proper divisors (9077841).

20425113 is a wasteful number, since it uses less digits than its factorization.

20425113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269463 (or 2269460 counting only the distinct ones).

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

The square root of 20425113 is about 4519.4151170257. The cubic root of 20425113 is about 273.3515175621.

Adding to 20425113 its reverse (31152402), we get a palindrome (51577515).

The spelling of 20425113 in words is "twenty million, four hundred twenty-five thousand, one hundred thirteen".