20522485 has 8 divisors (see below), whose sum is σ = 26075736. Its totient is φ = 15452160.

The previous prime is 20522477. The next prime is 20522507. The reversal of 20522485 is 58422502.

It can be written as a sum of positive squares in 4 ways, for example, as 6036849 + 14485636 = 2457^2 + 3806^2 .

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

It is not a de Polignac number, because 20522485 - 2³ = 20522477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120636 + ... + 120805.

It is an arithmetic number, because the mean of its divisors is an integer number (3259467).

Almost surely, 2^20522485 is an apocalyptic number.

It is an amenable number.

20522485 is a deficient number, since it is larger than the sum of its proper divisors (5553251).

20522485 is a wasteful number, since it uses less digits than its factorization.

20522485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241463.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 20522485 is about 4530.1749414344. The cubic root of 20522485 is about 273.7852091518.

Adding to 20522485 its reverse (58422502), we get a palindrome (78944987).

The spelling of 20522485 in words is "twenty million, five hundred twenty-two thousand, four hundred eighty-five".