25884987 has 8 divisors (see below), whose sum is σ = 34855440. Its totient is φ = 17085600.

The previous prime is 25884949. The next prime is 25885003. The reversal of 25884987 is 78948852.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25884987 - 2²⁰ = 24836411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25884487) 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, 42412 + ... + 43017.

It is an arithmetic number, because the mean of its divisors is an integer number (4356930).

Almost surely, 2^25884987 is an apocalyptic number.

25884987 is a deficient number, since it is larger than the sum of its proper divisors (8970453).

25884987 is a wasteful number, since it uses less digits than its factorization.

25884987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85533.

The product of its digits is 1290240, while the sum is 51.

The square root of 25884987 is about 5087.7290611824. The cubic root of 25884987 is about 295.8121334981.

The spelling of 25884987 in words is "twenty-five million, eight hundred eighty-four thousand, nine hundred eighty-seven".