20425333549 has 2 divisors, whose sum is σ = 20425333550. Its totient is φ = 20425333548.

The previous prime is 20425333531. The next prime is 20425333567. The reversal of 20425333549 is 94533352402.

It is a balanced prime because it is at equal distance from previous prime (20425333531) and next prime (20425333567).

It can be written as a sum of positive squares in only one way, i.e., 19661087524 + 764246025 = 140218^2 + 27645^2 .

It is a cyclic number.

It is not a de Polignac number, because 20425333549 - 2⁷ = 20425333421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20425333249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212666774 + 10212666775.

It is an arithmetic number, because the mean of its divisors is an integer number (10212666775).

Almost surely, 2^20425333549 is an apocalyptic number.

It is an amenable number.

20425333549 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425333549 is an equidigital number, since it uses as much as digits as its factorization.

20425333549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 20425333549 in words is "twenty billion, four hundred twenty-five million, three hundred thirty-three thousand, five hundred forty-nine".