7525665257 has 8 divisors (see below), whose sum is σ = 8222513472. Its totient is φ = 6830933200.

The previous prime is 7525665227. The next prime is 7525665263.

7525665257 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7525665257 - 2⁶ = 7525665193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7525665227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521594 + ... + 535827.

It is an arithmetic number, because the mean of its divisors is an integer number (1027814184).

Almost surely, 2^7525665257 is an apocalyptic number.

It is an amenable number.

7525665257 is a deficient number, since it is larger than the sum of its proper divisors (696848215).

7525665257 is a wasteful number, since it uses less digits than its factorization.

7525665257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058079.

The product of its digits is 4410000, while the sum is 50.

The square root of 7525665257 is about 86750.5922573443. The cubic root of 7525665257 is about 1959.6640803768.

The spelling of 7525665257 in words is "seven billion, five hundred twenty-five million, six hundred sixty-five thousand, two hundred fifty-seven".