2167819725 has 48 divisors (see below), whose sum is σ = 3815380800. Its totient is φ = 1082949120.

The previous prime is 2167819723. The next prime is 2167819777. The reversal of 2167819725 is 5279187612.

It is not a de Polignac number, because 2167819725 - 2¹ = 2167819723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2167819721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118279 + ... + 135371.

It is an arithmetic number, because the mean of its divisors is an integer number (79487100).

Almost surely, 2^2167819725 is an apocalyptic number.

2167819725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2167819725 is a deficient number, since it is larger than the sum of its proper divisors (1647561075).

2167819725 is a wasteful number, since it uses less digits than its factorization.

2167819725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17214 (or 17209 counting only the distinct ones).

The product of its digits is 423360, while the sum is 48.

The square root of 2167819725 is about 46559.8509984729. The cubic root of 2167819725 is about 1294.2188508167.

The spelling of 2167819725 in words is "two billion, one hundred sixty-seven million, eight hundred nineteen thousand, seven hundred twenty-five".