20250045 has 12 divisors (see below), whose sum is σ = 35100156. Its totient is φ = 10800000.

The previous prime is 20250031. The next prime is 20250047. The reversal of 20250045 is 54005202.

It can be written as a sum of positive squares in 2 ways, for example, as 10478169 + 9771876 = 3237^2 + 3126^2 .

It is not a de Polignac number, because 20250045 - 2¹⁶ = 20184509 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224956 + ... + 225045.

It is an arithmetic number, because the mean of its divisors is an integer number (2925013).

Almost surely, 2^20250045 is an apocalyptic number.

It is an amenable number.

20250045 is a deficient number, since it is larger than the sum of its proper divisors (14850111).

20250045 is a wasteful number, since it uses less digits than its factorization.

20250045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450012 (or 450009 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 20250045 is about 4500.0049999972. The cubic root of 20250045 is about 272.5682908270.

Adding to 20250045 its reverse (54005202), we get a palindrome (74255247).

The spelling of 20250045 in words is "twenty million, two hundred fifty thousand, forty-five".