8250978857 has 4 divisors (see below), whose sum is σ = 9001067856. Its totient is φ = 7500889860.

The previous prime is 8250978829. The next prime is 8250978871. The reversal of 8250978857 is 7588790528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8250978857 - 2³² = 3956011561 is a prime.

It is a super-2 number, since 2×8250978857² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8250978796 and 8250978805.

It is not an unprimeable number, because it can be changed into a prime (8250977857) 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, 375044483 + ... + 375044504.

It is an arithmetic number, because the mean of its divisors is an integer number (2250266964).

Almost surely, 2^8250978857 is an apocalyptic number.

It is an amenable number.

8250978857 is a deficient number, since it is larger than the sum of its proper divisors (750088999).

8250978857 is a wasteful number, since it uses less digits than its factorization.

8250978857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750088998.

The product of its (nonzero) digits is 11289600, while the sum is 59.

The square root of 8250978857 is about 90834.8988935420. The cubic root of 8250978857 is about 2020.6999222231.

The spelling of 8250978857 in words is "eight billion, two hundred fifty million, nine hundred seventy-eight thousand, eight hundred fifty-seven".