27421425 has 72 divisors (see below), whose sum is σ = 53273376. Its totient is φ = 13432320.

The previous prime is 27421423. The next prime is 27421439. The reversal of 27421425 is 52412472.

It is not a de Polignac number, because 27421425 - 2¹ = 27421423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27421421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 256222 + ... + 256328.

It is an arithmetic number, because the mean of its divisors is an integer number (739908).

Almost surely, 2^27421425 is an apocalyptic number.

27421425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27421425 is a deficient number, since it is larger than the sum of its proper divisors (25851951).

27421425 is a wasteful number, since it uses less digits than its factorization.

27421425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 199 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 27421425 is about 5236.5470493446. The cubic root of 27421425 is about 301.5527823566.

Adding to 27421425 its reverse (52412472), we get a palindrome (79833897).

The spelling of 27421425 in words is "twenty-seven million, four hundred twenty-one thousand, four hundred twenty-five".