25347949 has 8 divisors (see below), whose sum is σ = 27708192. Its totient is φ = 22997040.

The previous prime is 25347947. The next prime is 25347977. The reversal of 25347949 is 94974352.

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

It is not a de Polignac number, because 25347949 - 2¹ = 25347947 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 (25347947) 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 7 ways as a sum of consecutive naturals, for example, 4147 + ... + 8239.

It is an arithmetic number, because the mean of its divisors is an integer number (3463524).

Almost surely, 2^25347949 is an apocalyptic number.

It is an amenable number.

25347949 is a deficient number, since it is larger than the sum of its proper divisors (2360243).

25347949 is a wasteful number, since it uses less digits than its factorization.

25347949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4667.

The product of its digits is 272160, while the sum is 43.

The square root of 25347949 is about 5034.6746667486. The cubic root of 25347949 is about 293.7520739857.

The spelling of 25347949 in words is "twenty-five million, three hundred forty-seven thousand, nine hundred forty-nine".