25985427 has 16 divisors (see below), whose sum is σ = 37702560. Its totient is φ = 15823872.

The previous prime is 25985417. The next prime is 25985473. The reversal of 25985427 is 72458952.

It is not a de Polignac number, because 25985427 - 2⁴ = 25985411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25985417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349 + ... + 7217.

It is an arithmetic number, because the mean of its divisors is an integer number (2356410).

Almost surely, 2^25985427 is an apocalyptic number.

25985427 is a deficient number, since it is larger than the sum of its proper divisors (11717133).

25985427 is a wasteful number, since it uses less digits than its factorization.

25985427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982.

The product of its digits is 201600, while the sum is 42.

The square root of 25985427 is about 5097.5903130793. The cubic root of 25985427 is about 296.1942471949.

The spelling of 25985427 in words is "twenty-five million, nine hundred eighty-five thousand, four hundred twenty-seven".