2575396991 has 2 divisors, whose sum is σ = 2575396992. Its totient is φ = 2575396990.

The previous prime is 2575396981. The next prime is 2575397021. The reversal of 2575396991 is 1996935752.

It is a happy number.

2575396991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2575396991 - 2⁶ = 2575396927 is a prime.

It is a super-2 number, since 2×2575396991² = 13265339322503708162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2575396931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1287698495 + 1287698496.

It is an arithmetic number, because the mean of its divisors is an integer number (1287698496).

Almost surely, 2^2575396991 is an apocalyptic number.

2575396991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2575396991 is an equidigital number, since it uses as much as digits as its factorization.

2575396991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4592700, while the sum is 56.

The square root of 2575396991 is about 50748.3693432607. The cubic root of 2575396991 is about 1370.7178277732.

The spelling of 2575396991 in words is "two billion, five hundred seventy-five million, three hundred ninety-six thousand, nine hundred ninety-one".