7255416857 has 4 divisors (see below), whose sum is σ = 7813525860. Its totient is φ = 6697307856.

The previous prime is 7255416811. The next prime is 7255416901. The reversal of 7255416857 is 7586145527.

7255416857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1646006041 + 5609410816 = 40571^2 + 74896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7255416857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7255416557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279054482 + ... + 279054507.

It is an arithmetic number, because the mean of its divisors is an integer number (1953381465).

Almost surely, 2^7255416857 is an apocalyptic number.

It is an amenable number.

7255416857 is a deficient number, since it is larger than the sum of its proper divisors (558109003).

7255416857 is a wasteful number, since it uses less digits than its factorization.

7255416857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558109002.

The product of its digits is 2352000, while the sum is 50.

The square root of 7255416857 is about 85178.7347698943. The cubic root of 7255416857 is about 1935.9202229644.

The spelling of 7255416857 in words is "seven billion, two hundred fifty-five million, four hundred sixteen thousand, eight hundred fifty-seven".