20925026 has 4 divisors (see below), whose sum is σ = 31387542. Its totient is φ = 10462512.

The previous prime is 20925019. The next prime is 20925029. The reversal of 20925026 is 62052902.

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

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 358801 = 4535^2 + 599^2 .

It is a super-4 number, since 4×20925026⁴ (a number of 30 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20924986 and 20925004.

It is not an unprimeable number, because it can be changed into a prime (20925029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5231255 + ... + 5231258.

Almost surely, 2^20925026 is an apocalyptic number.

20925026 is a deficient number, since it is larger than the sum of its proper divisors (10462516).

20925026 is a wasteful number, since it uses less digits than its factorization.

20925026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462515.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20925026 is about 4574.3880465041. The cubic root of 20925026 is about 275.5636966344.

Adding to 20925026 its reverse (62052902), we get a palindrome (82977928).

The spelling of 20925026 in words is "twenty million, nine hundred twenty-five thousand, twenty-six".