25878057 has 16 divisors (see below), whose sum is σ = 36668160. Its totient is φ = 16187472.

The previous prime is 25878037. The next prime is 25878071. The reversal of 25878057 is 75087852.

It is a happy number.

It is not a de Polignac number, because 25878057 - 2⁶ = 25877993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25878037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3978 + ... + 8220.

It is an arithmetic number, because the mean of its divisors is an integer number (2291760).

Almost surely, 2^25878057 is an apocalyptic number.

It is an amenable number.

25878057 is a deficient number, since it is larger than the sum of its proper divisors (10790103).

25878057 is a wasteful number, since it uses less digits than its factorization.

25878057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 25878057 is about 5087.0479651759. The cubic root of 25878057 is about 295.7857325956.

The spelling of 25878057 in words is "twenty-five million, eight hundred seventy-eight thousand, fifty-seven".