8725256971 has 4 divisors (see below), whose sum is σ = 8725467744. Its totient is φ = 8725046200.

The previous prime is 8725256963. The next prime is 8725257031. The reversal of 8725256971 is 1796525278.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8725256971 - 2³ = 8725256963 is a prime.

It is a super-2 number, since 2×8725256971² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8725256921) 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, 20500 + ... + 133681.

It is an arithmetic number, because the mean of its divisors is an integer number (2181366936).

Almost surely, 2^8725256971 is an apocalyptic number.

8725256971 is a deficient number, since it is larger than the sum of its proper divisors (210773).

8725256971 is a wasteful number, since it uses less digits than its factorization.

8725256971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210772.

The product of its digits is 2116800, while the sum is 52.

The square root of 8725256971 is about 93409.0839854454. The cubic root of 8725256971 is about 2058.6984717720.

The spelling of 8725256971 in words is "eight billion, seven hundred twenty-five million, two hundred fifty-six thousand, nine hundred seventy-one".