27520425 has 24 divisors (see below), whose sum is σ = 50557280. Its totient is φ = 14677200.

The previous prime is 27520421. The next prime is 27520447. The reversal of 27520425 is 52402572.

It is not a de Polignac number, because 27520425 - 2² = 27520421 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (27520421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19711 + ... + 21060.

Almost surely, 2^27520425 is an apocalyptic number.

27520425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27520425 is a deficient number, since it is larger than the sum of its proper divisors (23036855).

27520425 is a wasteful number, since it uses less digits than its factorization.

27520425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40790 (or 40779 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 27520425 is about 5245.9913267180. The cubic root of 27520425 is about 301.9152467461.

Adding to 27520425 its reverse (52402572), we get a palindrome (79922997).

The spelling of 27520425 in words is "twenty-seven million, five hundred twenty thousand, four hundred twenty-five".