25887870 has 32 divisors (see below), whose sum is σ = 69035040. Its totient is φ = 6903360.

The previous prime is 25887853. The next prime is 25887871. The reversal of 25887870 is 7878852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25887871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47671 + ... + 48210.

It is an arithmetic number, because the mean of its divisors is an integer number (2157345).

Almost surely, 2^25887870 is an apocalyptic number.

25887870 is an abundant number, since it is smaller than the sum of its proper divisors (43147170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25887870 is a wasteful number, since it uses less digits than its factorization.

25887870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95897 (or 95891 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 25887870 is about 5088.0123820604. The cubic root of 25887870 is about 295.8231153428.

The spelling of 25887870 in words is "twenty-five million, eight hundred eighty-seven thousand, eight hundred seventy".