4939925561 has 2 divisors, whose sum is σ = 4939925562. Its totient is φ = 4939925560.

The previous prime is 4939925531. The next prime is 4939925591. The reversal of 4939925561 is 1655299394.

It is a balanced prime because it is at equal distance from previous prime (4939925531) and next prime (4939925591).

It can be written as a sum of positive squares in only one way, i.e., 4935905536 + 4020025 = 70256^2 + 2005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4939925561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4939925531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469962780 + 2469962781.

It is an arithmetic number, because the mean of its divisors is an integer number (2469962781).

Almost surely, 2^4939925561 is an apocalyptic number.

It is an amenable number.

4939925561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4939925561 is an equidigital number, since it uses as much as digits as its factorization.

4939925561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 53.

The square root of 4939925561 is about 70284.6040111204. The cubic root of 4939925561 is about 1703.0999448621.

The spelling of 4939925561 in words is "four billion, nine hundred thirty-nine million, nine hundred twenty-five thousand, five hundred sixty-one".