7525555257 has 32 divisors (see below), whose sum is σ = 11964063744. Its totient is φ = 4154169600.

The previous prime is 7525555241. The next prime is 7525555309.

7525555257 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7525555257 - 2⁴ = 7525555241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7525555217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198973 + ... + 233754.

It is an arithmetic number, because the mean of its divisors is an integer number (373876992).

Almost surely, 2^7525555257 is an apocalyptic number.

It is an amenable number.

7525555257 is a deficient number, since it is larger than the sum of its proper divisors (4438508487).

7525555257 is a wasteful number, since it uses less digits than its factorization.

7525555257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432789.

The product of its digits is 3062500, while the sum is 48.

The square root of 7525555257 is about 86749.9582535923. The cubic root of 7525555257 is about 1959.6545324236.

The spelling of 7525555257 in words is "seven billion, five hundred twenty-five million, five hundred fifty-five thousand, two hundred fifty-seven".