25878480 has 40 divisors (see below), whose sum is σ = 80224032. Its totient is φ = 6900864.

The previous prime is 25878443. The next prime is 25878491. The reversal of 25878480 is 8487852.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×25878480² = 1339391454220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53674 + ... + 54153.

Almost surely, 2^25878480 is an apocalyptic number.

25878480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25878480 is an abundant number, since it is smaller than the sum of its proper divisors (54345552).

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

25878480 is a wasteful number, since it uses less digits than its factorization.

25878480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107843 (or 107837 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 25878480 is about 5087.0895411817. The cubic root of 25878480 is about 295.7873442143.

The spelling of 25878480 in words is "twenty-five million, eight hundred seventy-eight thousand, four hundred eighty".