25381047 has 8 divisors (see below), whose sum is σ = 33967360. Its totient is φ = 16857720.

The previous prime is 25380991. The next prime is 25381067. The reversal of 25381047 is 74018352.

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

It is not a de Polignac number, because 25381047 - 2⁸ = 25380791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25381067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14797 + ... + 16422.

It is an arithmetic number, because the mean of its divisors is an integer number (4245920).

Almost surely, 2^25381047 is an apocalyptic number.

25381047 is a deficient number, since it is larger than the sum of its proper divisors (8586313).

25381047 is a wasteful number, since it uses less digits than its factorization.

25381047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31493.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 25381047 is about 5037.9605992902. The cubic root of 25381047 is about 293.8798736413.

Adding to 25381047 its reverse (74018352), we get a palindrome (99399399).

The spelling of 25381047 in words is "twenty-five million, three hundred eighty-one thousand, forty-seven".