25978162 has 32 divisors (see below), whose sum is σ = 45868032. Its totient is φ = 10805184.

The previous prime is 25978157. The next prime is 25978163. The reversal of 25978162 is 26187952.

It is not an unprimeable number, because it can be changed into a prime (25978163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116383 + ... + 116605.

It is an arithmetic number, because the mean of its divisors is an integer number (1433376).

Almost surely, 2^25978162 is an apocalyptic number.

25978162 is a deficient number, since it is larger than the sum of its proper divisors (19889870).

25978162 is a wasteful number, since it uses less digits than its factorization.

25978162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442.

The product of its digits is 60480, while the sum is 40.

The square root of 25978162 is about 5096.8776716731. The cubic root of 25978162 is about 296.1666413144.

The spelling of 25978162 in words is "twenty-five million, nine hundred seventy-eight thousand, one hundred sixty-two".