7525544455257 has 16 divisors (see below), whose sum is σ = 10046399152128. Its totient is φ = 5010863452560.

The previous prime is 7525544455243. The next prime is 7525544455271.

7525544455257 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (7525544455243) and next prime (7525544455271).

It is not a de Polignac number, because 7525544455257 - 2⁷ = 7525544455129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7525544455257.

It is not an unprimeable number, because it can be changed into a prime (7525544455237) 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 in 15 ways as a sum of consecutive naturals, for example, 7577178 + ... + 8512620.

It is an arithmetic number, because the mean of its divisors is an integer number (627899947008).

Almost surely, 2^{7525544455257} is an apocalyptic number.

It is an amenable number.

7525544455257 is a deficient number, since it is larger than the sum of its proper divisors (2520854696871).

7525544455257 is a wasteful number, since it uses less digits than its factorization.

7525544455257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938740.

The product of its digits is 196000000, while the sum is 60.

The spelling of 7525544455257 in words is "seven trillion, five hundred twenty-five billion, five hundred forty-four million, four hundred fifty-five thousand, two hundred fifty-seven".