25878347 has 4 divisors (see below), whose sum is σ = 28230936. Its totient is φ = 23525760.

The previous prime is 25878337. The next prime is 25878379. The reversal of 25878347 is 74387852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25878347 - 2⁴ = 25878331 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25878298 and 25878307.

It is not an unprimeable number, because it can be changed into a prime (25878337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176278 + ... + 1176299.

It is an arithmetic number, because the mean of its divisors is an integer number (7057734).

Almost surely, 2^25878347 is an apocalyptic number.

25878347 is a deficient number, since it is larger than the sum of its proper divisors (2352589).

25878347 is a wasteful number, since it uses less digits than its factorization.

25878347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352588.

The product of its digits is 376320, while the sum is 44.

The square root of 25878347 is about 5087.0764688571. The cubic root of 25878347 is about 295.7868374898.

The spelling of 25878347 in words is "twenty-five million, eight hundred seventy-eight thousand, three hundred forty-seven".