2198385725 has 24 divisors (see below), whose sum is σ = 2805757920. Its totient is φ = 1707974720.

The previous prime is 2198385713. The next prime is 2198385731. The reversal of 2198385725 is 5275838912.

It is a happy number.

It is not a de Polignac number, because 2198385725 - 2¹² = 2198381629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113447 + ... + 131403.

It is an arithmetic number, because the mean of its divisors is an integer number (116906580).

Almost surely, 2^2198385725 is an apocalyptic number.

2198385725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2198385725 is a deficient number, since it is larger than the sum of its proper divisors (607372195).

2198385725 is a wasteful number, since it uses less digits than its factorization.

2198385725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109 (or 18104 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 2198385725 is about 46886.9462110724. The cubic root of 2198385725 is about 1300.2732610967.

The spelling of 2198385725 in words is "two billion, one hundred ninety-eight million, three hundred eighty-five thousand, seven hundred twenty-five".