84019725 has 36 divisors (see below), whose sum is σ = 151178196. Its totient is φ = 44605440.

The previous prime is 84019723. The next prime is 84019777. The reversal of 84019725 is 52791048.

It can be written as a sum of positive squares in 6 ways, for example, as 19474569 + 64545156 = 4413^2 + 8034^2 .

It is not a de Polignac number, because 84019725 - 2¹ = 84019723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84019725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84019723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57099 + ... + 58551.

Almost surely, 2^84019725 is an apocalyptic number.

It is an amenable number.

84019725 is a deficient number, since it is larger than the sum of its proper divisors (67158471).

84019725 is a wasteful number, since it uses less digits than its factorization.

84019725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 84019725 is about 9166.2274137183. The cubic root of 84019725 is about 437.9861914706.

The spelling of 84019725 in words is "eighty-four million, nineteen thousand, seven hundred twenty-five".