27420225 has 48 divisors (see below), whose sum is σ = 53627520. Its totient is φ = 12096000.

The previous prime is 27420193. The next prime is 27420229. The reversal of 27420225 is 52202472.

27420225 = 231² + 232² + ... + 455².

27420225 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 27420225 - 2⁵ = 27420193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27420195 and 27420204.

It is not an unprimeable number, because it can be changed into a prime (27420229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14325 + ... + 16125.

It is an arithmetic number, because the mean of its divisors is an integer number (1117240).

Almost surely, 2^27420225 is an apocalyptic number.

27420225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27420225 is a deficient number, since it is larger than the sum of its proper divisors (26207295).

27420225 is a wasteful number, since it uses less digits than its factorization.

27420225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 27420225 is about 5236.4324687711. The cubic root of 27420225 is about 301.5483835016.

Adding to 27420225 its reverse (52202472), we get a palindrome (79622697).

The spelling of 27420225 in words is "twenty-seven million, four hundred twenty thousand, two hundred twenty-five".