8217253725 has 12 divisors (see below), whose sum is σ = 13585859616. Its totient is φ = 4382535280.

The previous prime is 8217253721. The next prime is 8217253727. The reversal of 8217253725 is 5273527128.

It is not a de Polignac number, because 8217253725 - 2² = 8217253721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8217253721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54781617 + ... + 54781766.

It is an arithmetic number, because the mean of its divisors is an integer number (1132154968).

Almost surely, 2^8217253725 is an apocalyptic number.

It is an amenable number.

8217253725 is a deficient number, since it is larger than the sum of its proper divisors (5368605891).

8217253725 is a wasteful number, since it uses less digits than its factorization.

8217253725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109563396 (or 109563391 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 8217253725 is about 90649.0690796105. The cubic root of 8217253725 is about 2017.9430197061.

The spelling of 8217253725 in words is "eight billion, two hundred seventeen million, two hundred fifty-three thousand, seven hundred twenty-five".