25870859 has 8 divisors (see below), whose sum is σ = 29634528. Its totient is φ = 22124160.

The previous prime is 25870853. The next prime is 25870861. The reversal of 25870859 is 95807852.

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 25870859 - 2⁴ = 25870843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25870853) 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, 782 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (3704316).

Almost surely, 2^25870859 is an apocalyptic number.

25870859 is a deficient number, since it is larger than the sum of its proper divisors (3763669).

25870859 is an equidigital number, since it uses as much as digits as its factorization.

25870859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 25870859 is about 5086.3404329636. The cubic root of 25870859 is about 295.7583057151.

It can be divided in two parts, 258 and 70859, that added together give a palindrome (71117).

The spelling of 25870859 in words is "twenty-five million, eight hundred seventy thousand, eight hundred fifty-nine".