27800425 has 6 divisors (see below), whose sum is σ = 34472558. Its totient is φ = 22240320.

The previous prime is 27800411. The next prime is 27800447. The reversal of 27800425 is 52400872.

It can be written as a sum of positive squares in 3 ways, for example, as 1545049 + 26255376 = 1243^2 + 5124^2 .

It is not a de Polignac number, because 27800425 - 2⁵ = 27800393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27800393 and 27800402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555984 + ... + 556033.

Almost surely, 2^27800425 is an apocalyptic number.

27800425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27800425 is a deficient number, since it is larger than the sum of its proper divisors (6672133).

27800425 is a wasteful number, since it uses less digits than its factorization.

27800425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112027 (or 1112022 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 27800425 is about 5272.6108333538. The cubic root of 27800425 is about 302.9357152487.

The spelling of 27800425 in words is "twenty-seven million, eight hundred thousand, four hundred twenty-five".