25456047 has 16 divisors (see below), whose sum is σ = 34859520. Its totient is φ = 16517952.

The previous prime is 25456019. The next prime is 25456069. The reversal of 25456047 is 74065452.

It is not a de Polignac number, because 25456047 - 2⁸ = 25455791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25455999 and 25456017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25456087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17178 + ... + 18600.

It is an arithmetic number, because the mean of its divisors is an integer number (2178720).

Almost surely, 2^25456047 is an apocalyptic number.

25456047 is a deficient number, since it is larger than the sum of its proper divisors (9403473).

25456047 is a wasteful number, since it uses less digits than its factorization.

25456047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 25456047 is about 5045.3985967414. The cubic root of 25456047 is about 294.1690568259.

The spelling of 25456047 in words is "twenty-five million, four hundred fifty-six thousand, forty-seven".