7255749529 has 6 divisors (see below), whose sum is σ = 8440361754. Its totient is φ = 6219213840.

The previous prime is 7255749521. The next prime is 7255749593. The reversal of 7255749529 is 9259475527.

It can be written as a sum of positive squares in only one way, i.e., 6570723600 + 685025929 = 81060^2 + 26173^2 .

It is not a de Polignac number, because 7255749529 - 2³ = 7255749521 is a prime.

It is a super-3 number, since 3×7255749529³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7255749529.

It is not an unprimeable number, because it can be changed into a prime (7255749521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74038212 + ... + 74038309.

It is an arithmetic number, because the mean of its divisors is an integer number (1406726959).

Almost surely, 2^7255749529 is an apocalyptic number.

It is an amenable number.

7255749529 is a deficient number, since it is larger than the sum of its proper divisors (1184612225).

7255749529 is a wasteful number, since it uses less digits than its factorization.

7255749529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148076535 (or 148076528 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 55.

The square root of 7255749529 is about 85180.6875353798. The cubic root of 7255749529 is about 1935.9498108168.

The spelling of 7255749529 in words is "seven billion, two hundred fifty-five million, seven hundred forty-nine thousand, five hundred twenty-nine".