20525973 has 8 divisors (see below), whose sum is σ = 29473248. Its totient is φ = 12631344.

The previous prime is 20525971. The next prime is 20526031. The reversal of 20525973 is 37952502.

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

It is not a de Polignac number, because 20525973 - 2¹ = 20525971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525971) 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 in 7 ways as a sum of consecutive naturals, for example, 263115 + ... + 263192.

It is an arithmetic number, because the mean of its divisors is an integer number (3684156).

Almost surely, 2^20525973 is an apocalyptic number.

It is an amenable number.

20525973 is a deficient number, since it is larger than the sum of its proper divisors (8947275).

20525973 is a wasteful number, since it uses less digits than its factorization.

20525973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526323.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 20525973 is about 4530.5598991736. The cubic root of 20525973 is about 273.8007191110.

The spelling of 20525973 in words is "twenty million, five hundred twenty-five thousand, nine hundred seventy-three".