20825966 has 8 divisors (see below), whose sum is σ = 35701680. Its totient is φ = 8925408.

The previous prime is 20825963. The next prime is 20825977. The reversal of 20825966 is 66952802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20825963) 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, 743771 + ... + 743798.

It is an arithmetic number, because the mean of its divisors is an integer number (4462710).

Almost surely, 2^20825966 is an apocalyptic number.

20825966 is a deficient number, since it is larger than the sum of its proper divisors (14875714).

20825966 is a wasteful number, since it uses less digits than its factorization.

20825966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487578.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 20825966 is about 4563.5475235829. The cubic root of 20825966 is about 275.1281650522.

The spelling of 20825966 in words is "twenty million, eight hundred twenty-five thousand, nine hundred sixty-six".