2725090781 has 16 divisors (see below), whose sum is σ = 3142748160. Its totient is φ = 2314619520.

The previous prime is 2725090721. The next prime is 2725090783. The reversal of 2725090781 is 1870905272.

It is a cyclic number.

It is not a de Polignac number, because 2725090781 - 2¹⁴ = 2725074397 is a prime.

It is a super-2 number, since 2×2725090781² = 14852239529382379922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725090783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355865 + ... + 363441.

It is an arithmetic number, because the mean of its divisors is an integer number (196421760).

Almost surely, 2^2725090781 is an apocalyptic number.

It is an amenable number.

2725090781 is a deficient number, since it is larger than the sum of its proper divisors (417657379).

2725090781 is a wasteful number, since it uses less digits than its factorization.

2725090781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 2725090781 is about 52202.4020615910. The cubic root of 2725090781 is about 1396.7767310791.

The spelling of 2725090781 in words is "two billion, seven hundred twenty-five million, ninety thousand, seven hundred eighty-one".