7625238991 has 2 divisors, whose sum is σ = 7625238992. Its totient is φ = 7625238990.

The previous prime is 7625238953. The next prime is 7625238997. The reversal of 7625238991 is 1998325267.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7625238991 - 2²⁵ = 7591684559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7625238997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3812619495 + 3812619496.

It is an arithmetic number, because the mean of its divisors is an integer number (3812619496).

Almost surely, 2^7625238991 is an apocalyptic number.

7625238991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7625238991 is an equidigital number, since it uses as much as digits as its factorization.

7625238991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 7625238991 is about 87322.6144306273. The cubic root of 7625238991 is about 1968.2691549952.

The spelling of 7625238991 in words is "seven billion, six hundred twenty-five million, two hundred thirty-eight thousand, nine hundred ninety-one".