20625437 has 16 divisors (see below), whose sum is σ = 25080192. Its totient is φ = 16558080.

The previous prime is 20625421. The next prime is 20625439. The reversal of 20625437 is 73452602.

It is not a de Polignac number, because 20625437 - 2⁴ = 20625421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625439) 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 15 ways as a sum of consecutive naturals, for example, 41762 + ... + 42252.

It is an arithmetic number, because the mean of its divisors is an integer number (1567512).

Almost surely, 2^20625437 is an apocalyptic number.

It is an amenable number.

20625437 is a deficient number, since it is larger than the sum of its proper divisors (4454755).

20625437 is a wasteful number, since it uses less digits than its factorization.

20625437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20625437 is about 4541.5236430079. The cubic root of 20625437 is about 274.2422644649.

The spelling of 20625437 in words is "twenty million, six hundred twenty-five thousand, four hundred thirty-seven".