20970225733 has 2 divisors, whose sum is σ = 20970225734. Its totient is φ = 20970225732.

The previous prime is 20970225673. The next prime is 20970225739. The reversal of 20970225733 is 33752207902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11167839684 + 9802386049 = 105678^2 + 99007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20970225733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20970225739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10485112866 + 10485112867.

It is an arithmetic number, because the mean of its divisors is an integer number (10485112867).

Almost surely, 2^20970225733 is an apocalyptic number.

It is an amenable number.

20970225733 is a deficient number, since it is larger than the sum of its proper divisors (1).

20970225733 is an equidigital number, since it uses as much as digits as its factorization.

20970225733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 40.

The spelling of 20970225733 in words is "twenty billion, nine hundred seventy million, two hundred twenty-five thousand, seven hundred thirty-three".