20525337 has 24 divisors (see below), whose sum is σ = 34354944. Its totient is φ = 11565504.

The previous prime is 20525311. The next prime is 20525347. The reversal of 20525337 is 73352502.

It is not a de Polignac number, because 20525337 - 2¹¹ = 20523289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20525337.

It is not an unprimeable number, because it can be changed into a prime (20525347) 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 23 ways as a sum of consecutive naturals, for example, 2368 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (1431456).

Almost surely, 2^20525337 is an apocalyptic number.

It is an amenable number.

20525337 is a deficient number, since it is larger than the sum of its proper divisors (13829607).

20525337 is a wasteful number, since it uses less digits than its factorization.

20525337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4546 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 20525337 is about 4530.4897086297. The cubic root of 20525337 is about 273.7978911646.

Adding to 20525337 its reverse (73352502), we get a palindrome (93877839).

The spelling of 20525337 in words is "twenty million, five hundred twenty-five thousand, three hundred thirty-seven".