2725431865 has 8 divisors (see below), whose sum is σ = 3522096648. Its totient is φ = 2012626560.

The previous prime is 2725431853. The next prime is 2725431881. The reversal of 2725431865 is 5681345272.

It can be written as a sum of positive squares in 4 ways, for example, as 647804304 + 2077627561 = 25452^2 + 45581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2725431865 - 2¹⁵ = 2725399097 is a prime.

It is a super-3 number, since 3×2725431865³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20964796 + ... + 20964925.

It is an arithmetic number, because the mean of its divisors is an integer number (440262081).

Almost surely, 2^2725431865 is an apocalyptic number.

It is an amenable number.

2725431865 is a deficient number, since it is larger than the sum of its proper divisors (796664783).

2725431865 is a wasteful number, since it uses less digits than its factorization.

2725431865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41929739.

The product of its digits is 403200, while the sum is 43.

The square root of 2725431865 is about 52205.6688971610. The cubic root of 2725431865 is about 1396.8350041616.

The spelling of 2725431865 in words is "two billion, seven hundred twenty-five million, four hundred thirty-one thousand, eight hundred sixty-five".