25828487 has 4 divisors (see below), whose sum is σ = 26661696. Its totient is φ = 24995280.

The previous prime is 25828477. The next prime is 25828493. The reversal of 25828487 is 78482852.

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 25828487 - 2¹⁰ = 25827463 is a prime.

It is a super-2 number, since 2×25828487² = 1334221481418338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25828477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416558 + ... + 416619.

It is an arithmetic number, because the mean of its divisors is an integer number (6665424).

Almost surely, 2^25828487 is an apocalyptic number.

25828487 is a deficient number, since it is larger than the sum of its proper divisors (833209).

25828487 is an equidigital number, since it uses as much as digits as its factorization.

25828487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833208.

The product of its digits is 286720, while the sum is 44.

The square root of 25828487 is about 5082.1734523725. The cubic root of 25828487 is about 295.5967504707.

The spelling of 25828487 in words is "twenty-five million, eight hundred twenty-eight thousand, four hundred eighty-seven".