20825601 has 8 divisors (see below), whose sum is σ = 27814944. Its totient is φ = 13860000.

The previous prime is 20825599. The next prime is 20825611. The reversal of 20825601 is 10652802.

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

It is not a de Polignac number, because 20825601 - 2¹ = 20825599 is a prime.

It is a super-2 number, since 2×20825601² = 867411314022402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20825611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3775 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (3476868).

Almost surely, 2^20825601 is an apocalyptic number.

It is an amenable number.

20825601 is a deficient number, since it is larger than the sum of its proper divisors (6989343).

20825601 is a wasteful number, since it uses less digits than its factorization.

20825601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11871.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20825601 is about 4563.5075325894. The cubic root of 20825601 is about 275.1265577259.

The spelling of 20825601 in words is "twenty million, eight hundred twenty-five thousand, six hundred one".