2127309725 has 6 divisors (see below), whose sum is σ = 2637864090. Its totient is φ = 1701847760.

The previous prime is 2127309713. The next prime is 2127309733. The reversal of 2127309725 is 5279037212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 407797636 + 1719512089 = 20194^2 + 41467^2 .

It is not a de Polignac number, because 2127309725 - 2¹⁸ = 2127047581 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42546170 + ... + 42546219.

It is an arithmetic number, because the mean of its divisors is an integer number (439644015).

Almost surely, 2^2127309725 is an apocalyptic number.

2127309725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2127309725 is a deficient number, since it is larger than the sum of its proper divisors (510554365).

2127309725 is an equidigital number, since it uses as much as digits as its factorization.

2127309725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85092399 (or 85092394 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2127309725 is about 46122.7679676751. The cubic root of 2127309725 is about 1286.1064269314.

The spelling of 2127309725 in words is "two billion, one hundred twenty-seven million, three hundred nine thousand, seven hundred twenty-five".