20825653 has 8 divisors (see below), whose sum is σ = 22389120. Its totient is φ = 19308960.

The previous prime is 20825647. The next prime is 20825657. The reversal of 20825653 is 35652802.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20825653 - 2⁵ = 20825621 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 (20825657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10768 + ... + 12553.

It is an arithmetic number, because the mean of its divisors is an integer number (2798640).

Almost surely, 2^20825653 is an apocalyptic number.

It is an amenable number.

20825653 is a deficient number, since it is larger than the sum of its proper divisors (1563467).

20825653 is a wasteful number, since it uses less digits than its factorization.

20825653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23387.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20825653 is about 4563.5132299578. The cubic root of 20825653 is about 275.1267867160.

The spelling of 20825653 in words is "twenty million, eight hundred twenty-five thousand, six hundred fifty-three".