20056825549 has 2 divisors, whose sum is σ = 20056825550. Its totient is φ = 20056825548.

The previous prime is 20056825513. The next prime is 20056825553. The reversal of 20056825549 is 94552865002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18128737449 + 1928088100 = 134643^2 + 43910^2 .

It is a cyclic number.

It is not a de Polignac number, because 20056825549 - 2¹³ = 20056817357 is a prime.

It is a super-2 number, since 2×20056825549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20056825499 and 20056825508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20056825589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10028412774 + 10028412775.

It is an arithmetic number, because the mean of its divisors is an integer number (10028412775).

Almost surely, 2^20056825549 is an apocalyptic number.

It is an amenable number.

20056825549 is a deficient number, since it is larger than the sum of its proper divisors (1).

20056825549 is an equidigital number, since it uses as much as digits as its factorization.

20056825549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 20056825549 in words is "twenty billion, fifty-six million, eight hundred twenty-five thousand, five hundred forty-nine".