8214931725 has 96 divisors (see below), whose sum is σ = 18236166144. Its totient is φ = 3151353600.

The previous prime is 8214931721. The next prime is 8214931733. The reversal of 8214931725 is 5271394128.

It is not a de Polignac number, because 8214931725 - 2² = 8214931721 is a prime.

It is a super-2 number, since 2×8214931725² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8214931721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20364 + ... + 129786.

It is an arithmetic number, because the mean of its divisors is an integer number (189960064).

Almost surely, 2^8214931725 is an apocalyptic number.

It is an amenable number.

8214931725 is an abundant number, since it is smaller than the sum of its proper divisors (10021234419).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8214931725 is a wasteful number, since it uses less digits than its factorization.

8214931725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109467 (or 109462 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 8214931725 is about 90636.2605417942. The cubic root of 8214931725 is about 2017.7529276035.

It can be divided in two parts, 8214 and 931725, that added together give a palindrome (939939).

The spelling of 8214931725 in words is "eight billion, two hundred fourteen million, nine hundred thirty-one thousand, seven hundred twenty-five".