25875989 has 8 divisors (see below), whose sum is σ = 28589760. Its totient is φ = 23294656.

The previous prime is 25875973. The next prime is 25876009. The reversal of 25875989 is 98957852.

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 25875989 - 2⁴ = 25875973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25875989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25875919) 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, 32699 + ... + 33480.

It is an arithmetic number, because the mean of its divisors is an integer number (3573720).

Almost surely, 2^25875989 is an apocalyptic number.

It is an amenable number.

25875989 is a deficient number, since it is larger than the sum of its proper divisors (2713771).

25875989 is a wasteful number, since it uses less digits than its factorization.

25875989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66219.

The product of its digits is 1814400, while the sum is 53.

The square root of 25875989 is about 5086.8446998115. The cubic root of 25875989 is about 295.7778533180. Note that the first 3 decimals are identical.

The spelling of 25875989 in words is "twenty-five million, eight hundred seventy-five thousand, nine hundred eighty-nine".