2725626989 has 2 divisors, whose sum is σ = 2725626990. Its totient is φ = 2725626988.

The previous prime is 2725626947. The next prime is 2725626997. The reversal of 2725626989 is 9896265272.

2725626989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2668548964 + 57078025 = 51658^2 + 7555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2725626989 is a prime.

It is a super-2 number, since 2×2725626989² = 14858084966330412242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2725626089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362813494 + 1362813495.

It is an arithmetic number, because the mean of its divisors is an integer number (1362813495).

Almost surely, 2^2725626989 is an apocalyptic number.

It is an amenable number.

2725626989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725626989 is an equidigital number, since it uses as much as digits as its factorization.

2725626989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The square root of 2725626989 is about 52207.5376645940. The cubic root of 2725626989 is about 1396.8683382706.

It can be divided in two parts, 27256 and 26989, that added together give a palindrome (54245).

The spelling of 2725626989 in words is "two billion, seven hundred twenty-five million, six hundred twenty-six thousand, nine hundred eighty-nine".