25803947 has 8 divisors (see below), whose sum is σ = 27872544. Its totient is φ = 23747328.

The previous prime is 25803941. The next prime is 25803959. The reversal of 25803947 is 74930852.

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

It is a cyclic number.

It is not a de Polignac number, because 25803947 - 2⁴ = 25803931 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 25803947.

It is not an unprimeable number, because it can be changed into a prime (25803941) 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, 1778 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (3484068).

Almost surely, 2^25803947 is an apocalyptic number.

25803947 is a deficient number, since it is larger than the sum of its proper divisors (2068597).

25803947 is a wasteful number, since it uses less digits than its factorization.

25803947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 25803947 is about 5079.7585572545. The cubic root of 25803947 is about 295.5031039629.

The spelling of 25803947 in words is "twenty-five million, eight hundred three thousand, nine hundred forty-seven".