2725751645 has 4 divisors (see below), whose sum is σ = 3270901980. Its totient is φ = 2180601312.

The previous prime is 2725751629. The next prime is 2725751671. The reversal of 2725751645 is 5461575272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1257482521 + 1468269124 = 35461^2 + 38318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725751645 - 2⁴ = 2725751629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2725751596 and 2725751605.

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 3 ways as a sum of consecutive naturals, for example, 272575160 + ... + 272575169.

It is an arithmetic number, because the mean of its divisors is an integer number (817725495).

Almost surely, 2^2725751645 is an apocalyptic number.

It is an amenable number.

2725751645 is a deficient number, since it is larger than the sum of its proper divisors (545150335).

2725751645 is an equidigital number, since it uses as much as digits as its factorization.

2725751645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545150334.

The product of its digits is 588000, while the sum is 44.

The square root of 2725751645 is about 52208.7315015410. The cubic root of 2725751645 is about 1396.8896331098.

The spelling of 2725751645 in words is "two billion, seven hundred twenty-five million, seven hundred fifty-one thousand, six hundred forty-five".