25591043 has 8 divisors (see below), whose sum is σ = 26984400. Its totient is φ = 24202368.

The previous prime is 25591039. The next prime is 25591051. The reversal of 25591043 is 34019552.

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 25591043 - 2² = 25591039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25590997 and 25591015.

It is not an unprimeable number, because it can be changed into a prime (25591003) 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, 20855 + ... + 22047.

It is an arithmetic number, because the mean of its divisors is an integer number (3373050).

Almost surely, 2^25591043 is an apocalyptic number.

25591043 is a deficient number, since it is larger than the sum of its proper divisors (1393357).

25591043 is a wasteful number, since it uses less digits than its factorization.

25591043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25591043 is about 5058.7590375506. The cubic root of 25591043 is about 294.6881431002.

The spelling of 25591043 in words is "twenty-five million, five hundred ninety-one thousand, forty-three".