20525453 has 16 divisors (see below), whose sum is σ = 24286080. Its totient is φ = 17164224.

The previous prime is 20525437. The next prime is 20525459. The reversal of 20525453 is 35452502.

It is a cyclic number.

It is not a de Polignac number, because 20525453 - 2⁴ = 20525437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3875 + ... + 7487.

It is an arithmetic number, because the mean of its divisors is an integer number (1517880).

Almost surely, 2^20525453 is an apocalyptic number.

20525453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20525453 is a deficient number, since it is larger than the sum of its proper divisors (3760627).

20525453 is a wasteful number, since it uses less digits than its factorization.

20525453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20525453 is about 4530.5025107597. The cubic root of 20525453 is about 273.7984069579.

Adding to 20525453 its reverse (35452502), we get a palindrome (55977955).

The spelling of 20525453 in words is "twenty million, five hundred twenty-five thousand, four hundred fifty-three".