25645458 has 16 divisors (see below), whose sum is σ = 52484256. Its totient is φ = 8349600.

The previous prime is 25645457. The next prime is 25645493. The reversal of 25645458 is 85454652.

It is not an unprimeable number, because it can be changed into a prime (25645457) 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 7 ways as a sum of consecutive naturals, for example, 49443 + ... + 49958.

It is an arithmetic number, because the mean of its divisors is an integer number (3280266).

Almost surely, 2^25645458 is an apocalyptic number.

25645458 is an abundant number, since it is smaller than the sum of its proper divisors (26838798).

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

25645458 is a wasteful number, since it uses less digits than its factorization.

25645458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99449.

The product of its digits is 192000, while the sum is 39.

The square root of 25645458 is about 5064.1344768874. The cubic root of 25645458 is about 294.8968633044.

The spelling of 25645458 in words is "twenty-five million, six hundred forty-five thousand, four hundred fifty-eight".