20625593 has 2 divisors, whose sum is σ = 20625594. Its totient is φ = 20625592.

The previous prime is 20625589. The next prime is 20625599. The reversal of 20625593 is 39552602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 840889 = 4448^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 20625593 - 2² = 20625589 is a prime.

It is not a weakly prime, because it can be changed into another prime (20625599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10312796 + 10312797.

It is an arithmetic number, because the mean of its divisors is an integer number (10312797).

Almost surely, 2^20625593 is an apocalyptic number.

It is an amenable number.

20625593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20625593 is an equidigital number, since it uses as much as digits as its factorization.

20625593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 20625593 is about 4541.5408178282. The cubic root of 20625593 is about 274.2429558714.

The spelling of 20625593 in words is "twenty million, six hundred twenty-five thousand, five hundred ninety-three".