25857378 has 24 divisors (see below), whose sum is σ = 56160000. Its totient is φ = 8598264.

The previous prime is 25857361. The next prime is 25857401. The reversal of 25857378 is 87375852.

25857378 is a `hidden beast` number, since 2 + 5 + 8 + 573 + 78 = 666.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7123 + ... + 10121.

It is an arithmetic number, because the mean of its divisors is an integer number (2340000).

Almost surely, 2^25857378 is an apocalyptic number.

25857378 is an abundant number, since it is smaller than the sum of its proper divisors (30302622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25857378 is a wasteful number, since it uses less digits than its factorization.

25857378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3483 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 25857378 is about 5085.0150442255. The cubic root of 25857378 is about 295.7069247325.

The spelling of 25857378 in words is "twenty-five million, eight hundred fifty-seven thousand, three hundred seventy-eight".