25878180 has 48 divisors (see below), whose sum is σ = 74801664. Its totient is φ = 6677760.

The previous prime is 25878173. The next prime is 25878221. The reversal of 25878180 is 8187852.

It is a super-2 number, since 2×25878180² = 1339360400224800, which contains 22 as substring.

It is an unprimeable number.

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, 5097 + ... + 8816.

It is an arithmetic number, because the mean of its divisors is an integer number (1558368).

Almost surely, 2^25878180 is an apocalyptic number.

25878180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25878180 is an abundant number, since it is smaller than the sum of its proper divisors (48923484).

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

25878180 is a wasteful number, since it uses less digits than its factorization.

25878180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956 (or 13954 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 25878180 is about 5087.0600546878. The cubic root of 25878180 is about 295.7862012242.

The spelling of 25878180 in words is "twenty-five million, eight hundred seventy-eight thousand, one hundred eighty".