25678775 has 12 divisors (see below), whose sum is σ = 32940600. Its totient is φ = 19834080.

The previous prime is 25678771. The next prime is 25678781. The reversal of 25678775 is 57787652.

It is a happy number.

It is not a de Polignac number, because 25678775 - 2² = 25678771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25678771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16985 + ... + 18434.

It is an arithmetic number, because the mean of its divisors is an integer number (2745050).

Almost surely, 2^25678775 is an apocalyptic number.

25678775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25678775 is a deficient number, since it is larger than the sum of its proper divisors (7261825).

25678775 is a wasteful number, since it uses less digits than its factorization.

25678775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35458 (or 35453 counting only the distinct ones).

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

The square root of 25678775 is about 5067.4229150526. The cubic root of 25678775 is about 295.0245119917.

The spelling of 25678775 in words is "twenty-five million, six hundred seventy-eight thousand, seven hundred seventy-five".