25128043 has 4 divisors (see below), whose sum is σ = 25147080. Its totient is φ = 25109008.

The previous prime is 25128031. The next prime is 25128067. The reversal of 25128043 is 34082152.

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 25128043 - 2¹³ = 25119851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25127999 and 25128017.

It is not an unprimeable number, because it can be changed into a prime (25128343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7378 + ... + 10231.

It is an arithmetic number, because the mean of its divisors is an integer number (6286770).

Almost surely, 2^25128043 is an apocalyptic number.

25128043 is a deficient number, since it is larger than the sum of its proper divisors (19037).

25128043 is a wasteful number, since it uses less digits than its factorization.

25128043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19036.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25128043 is about 5012.7879468416. The cubic root of 25128043 is about 292.9001239882.

The spelling of 25128043 in words is "twenty-five million, one hundred twenty-eight thousand, forty-three".