25675778 has 6 divisors (see below), whose sum is σ = 38524419. Its totient is φ = 12834306.

The previous prime is 25675777. The next prime is 25675787. The reversal of 25675778 is 87757652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12837889 + 12837889 = 3583^2 + 3583^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3583.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25675777) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5375 + ... + 8957.

Almost surely, 2^25675778 is an apocalyptic number.

25675778 is a deficient number, since it is larger than the sum of its proper divisors (12848641).

25675778 is an frugal number, since it uses more digits than its factorization.

25675778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7168 (or 3585 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 25675778 is about 5067.1271939828. The cubic root of 25675778 is about 295.0130339927.

The spelling of 25675778 in words is "twenty-five million, six hundred seventy-five thousand, seven hundred seventy-eight".