84722519725 has 24 divisors (see below), whose sum is σ = 105752843240. Its totient is φ = 67329792000.

The previous prime is 84722519723. The next prime is 84722519743. The reversal of 84722519725 is 52791522748.

It can be written as a sum of positive squares in 12 ways, for example, as 12508856649 + 72213663076 = 111843^2 + 268726^2 .

It is not a de Polignac number, because 84722519725 - 2¹ = 84722519723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84722519723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2447035 + ... + 2481415.

Almost surely, 2^84722519725 is an apocalyptic number.

It is an amenable number.

84722519725 is a deficient number, since it is larger than the sum of its proper divisors (21030323515).

84722519725 is a wasteful number, since it uses less digits than its factorization.

84722519725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35041 (or 35036 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The spelling of 84722519725 in words is "eighty-four billion, seven hundred twenty-two million, five hundred nineteen thousand, seven hundred twenty-five".