7664125331 has 2 divisors, whose sum is σ = 7664125332. Its totient is φ = 7664125330.

The previous prime is 7664125327. The next prime is 7664125363. The reversal of 7664125331 is 1335214667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7664125331 - 2² = 7664125327 is a prime.

It is a super-2 number, since 2×7664125331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7664125321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832062665 + 3832062666.

It is an arithmetic number, because the mean of its divisors is an integer number (3832062666).

Almost surely, 2^7664125331 is an apocalyptic number.

7664125331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664125331 is an equidigital number, since it uses as much as digits as its factorization.

7664125331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 7664125331 is about 87544.9903249752. The cubic root of 7664125331 is about 1971.6093363350.

Adding to 7664125331 its reverse (1335214667), we get a palindrome (8999339998).

The spelling of 7664125331 in words is "seven billion, six hundred sixty-four million, one hundred twenty-five thousand, three hundred thirty-one".