25980047 has 4 divisors (see below), whose sum is σ = 26110800. Its totient is φ = 25849296.

The previous prime is 25980037. The next prime is 25980067. The reversal of 25980047 is 74008952.

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 25980047 - 2¹² = 25975951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25979989 and 25980016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25980037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65078 + ... + 65475.

It is an arithmetic number, because the mean of its divisors is an integer number (6527700).

Almost surely, 2^25980047 is an apocalyptic number.

25980047 is a deficient number, since it is larger than the sum of its proper divisors (130753).

25980047 is a wasteful number, since it uses less digits than its factorization.

25980047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130752.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 25980047 is about 5097.0625854506. The cubic root of 25980047 is about 296.1738045183.

Adding to 25980047 its reverse (74008952), we get a palindrome (99988999).

The spelling of 25980047 in words is "twenty-five million, nine hundred eighty thousand, forty-seven".