7257525139 has 2 divisors, whose sum is σ = 7257525140. Its totient is φ = 7257525138.

The previous prime is 7257525089. The next prime is 7257525167. The reversal of 7257525139 is 9315257527.

7257525139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (9315257527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7257525139 - 2²⁵ = 7223970707 is a prime.

It is a super-2 number, since 2×7257525139² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7257535139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628762569 + 3628762570.

It is an arithmetic number, because the mean of its divisors is an integer number (3628762570).

Almost surely, 2^7257525139 is an apocalyptic number.

7257525139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7257525139 is an equidigital number, since it uses as much as digits as its factorization.

7257525139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The square root of 7257525139 is about 85191.1095068024. The cubic root of 7257525139 is about 1936.1077183017.

The spelling of 7257525139 in words is "seven billion, two hundred fifty-seven million, five hundred twenty-five thousand, one hundred thirty-nine".