614401625081 has 2 divisors, whose sum is σ = 614401625082. Its totient is φ = 614401625080.

The previous prime is 614401624957. The next prime is 614401625147. The reversal of 614401625081 is 180526104416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423905166400 + 190496458681 = 651080^2 + 436459^2 .

It is a cyclic number.

It is not a de Polignac number, because 614401625081 - 2¹⁸ = 614401362937 is a prime.

It is a super-2 number, since 2×614401625081² (a number of 24 digits) contains 22 as substring.

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 (614401625281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307200812540 + 307200812541.

It is an arithmetic number, because the mean of its divisors is an integer number (307200812541).

Almost surely, 2^614401625081 is an apocalyptic number.

It is an amenable number.

614401625081 is a deficient number, since it is larger than the sum of its proper divisors (1).

614401625081 is an equidigital number, since it uses as much as digits as its factorization.

614401625081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

Adding to 614401625081 its reverse (180526104416), we get a palindrome (794927729497).

The spelling of 614401625081 in words is "six hundred fourteen billion, four hundred one million, six hundred twenty-five thousand, eighty-one".