25428878 has 8 divisors (see below), whose sum is σ = 40150920. Its totient is φ = 12045240.

The previous prime is 25428857. The next prime is 25428881. The reversal of 25428878 is 87882452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334553 + ... + 334628.

It is an arithmetic number, because the mean of its divisors is an integer number (5018865).

Almost surely, 2^25428878 is an apocalyptic number.

25428878 is a deficient number, since it is larger than the sum of its proper divisors (14722042).

25428878 is a wasteful number, since it uses less digits than its factorization.

25428878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669202.

The product of its digits is 286720, while the sum is 44.

The square root of 25428878 is about 5042.7054246704. The cubic root of 25428878 is about 294.0643649473.

The spelling of 25428878 in words is "twenty-five million, four hundred twenty-eight thousand, eight hundred seventy-eight".