2179974725 has 6 divisors (see below), whose sum is σ = 2703168690. Its totient is φ = 1743979760.

The previous prime is 2179974721. The next prime is 2179974739. The reversal of 2179974725 is 5274799712.

2179974725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 23951236 + 2156023489 = 4894^2 + 46433^2 .

It is not a de Polignac number, because 2179974725 - 2² = 2179974721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179974721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43599470 + ... + 43599519.

It is an arithmetic number, because the mean of its divisors is an integer number (450528115).

Almost surely, 2^2179974725 is an apocalyptic number.

2179974725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2179974725 is a deficient number, since it is larger than the sum of its proper divisors (523193965).

2179974725 is an equidigital number, since it uses as much as digits as its factorization.

2179974725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87198999 (or 87198994 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 53.

The square root of 2179974725 is about 46690.1994534185. The cubic root of 2179974725 is about 1296.6332458643.

The spelling of 2179974725 in words is "two billion, one hundred seventy-nine million, nine hundred seventy-four thousand, seven hundred twenty-five".