25580487 has 8 divisors (see below), whose sum is σ = 35207680. Its totient is φ = 16503480.

The previous prime is 25580473. The next prime is 25580491. The reversal of 25580487 is 78408552.

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

It is not a de Polignac number, because 25580487 - 2⁸ = 25580231 is a prime.

It is a super-2 number, since 2×25580487² = 1308722630314338, 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 (25580497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137437 + ... + 137622.

It is an arithmetic number, because the mean of its divisors is an integer number (4400960).

Almost surely, 2^25580487 is an apocalyptic number.

25580487 is a deficient number, since it is larger than the sum of its proper divisors (9627193).

25580487 is a wasteful number, since it uses less digits than its factorization.

25580487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275093.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 25580487 is about 5057.7155910549. The cubic root of 25580487 is about 294.6476190798.

The spelling of 25580487 in words is "twenty-five million, five hundred eighty thousand, four hundred eighty-seven".