25986538 has 16 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 12623200.

The previous prime is 25986533. The next prime is 25986551. The reversal of 25986538 is 83568952.

It is not an unprimeable number, because it can be changed into a prime (25986533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24993 + ... + 26011.

It is an arithmetic number, because the mean of its divisors is an integer number (2506140).

Almost surely, 2^25986538 is an apocalyptic number.

25986538 is a deficient number, since it is larger than the sum of its proper divisors (14111702).

25986538 is a wasteful number, since it uses less digits than its factorization.

25986538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its digits is 518400, while the sum is 46.

The square root of 25986538 is about 5097.6992849716. The cubic root of 25986538 is about 296.1984683701.

The spelling of 25986538 in words is "twenty-five million, nine hundred eighty-six thousand, five hundred thirty-eight".