25859490 has 32 divisors (see below), whose sum is σ = 62401536. Its totient is φ = 6858240.

The previous prime is 25859467. The next prime is 25859543. The reversal of 25859490 is 9495852.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3474 + ... + 7986.

It is an arithmetic number, because the mean of its divisors is an integer number (1950048).

Almost surely, 2^25859490 is an apocalyptic number.

25859490 is an abundant number, since it is smaller than the sum of its proper divisors (36542046).

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

25859490 is a wasteful number, since it uses less digits than its factorization.

25859490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 25859490 is about 5085.2227089873. Note that the first 3 decimals coincide. The cubic root of 25859490 is about 295.7149755104.

The spelling of 25859490 in words is "twenty-five million, eight hundred fifty-nine thousand, four hundred ninety".