27090725 has 12 divisors (see below), whose sum is σ = 33928260. Its totient is φ = 21456000.

The previous prime is 27090703. The next prime is 27090761. The reversal of 27090725 is 52709072.

It can be written as a sum of positive squares in 6 ways, for example, as 2070721 + 25020004 = 1439^2 + 5002^2 .

It is not a de Polignac number, because 27090725 - 2¹⁰ = 27089701 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 27090691 and 27090700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2840 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (2827355).

Almost surely, 2^27090725 is an apocalyptic number.

27090725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27090725 is a deficient number, since it is larger than the sum of its proper divisors (6837535).

27090725 is a wasteful number, since it uses less digits than its factorization.

27090725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10840 (or 10835 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 27090725 is about 5204.8751185787. The cubic root of 27090725 is about 300.3356428580.

Adding to 27090725 its reverse (52709072), we get a palindrome (79799797).

The spelling of 27090725 in words is "twenty-seven million, ninety thousand, seven hundred twenty-five".