24995985 has 32 divisors (see below), whose sum is σ = 46179072. Its totient is φ = 11308800.

The previous prime is 24995977. The next prime is 24995987. The reversal of 24995985 is 58959942.

24995985 is a nontrivial binomial coefficient, being equal to C(7071, 2).

It is not a de Polignac number, because 24995985 - 2³ = 24995977 is a prime.

It is a super-2 number, since 2×24995985² = 1249598532240450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (24995987) 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 31 ways as a sum of consecutive naturals, for example, 9427 + ... + 11783.

It is an arithmetic number, because the mean of its divisors is an integer number (1443096).

Almost surely, 2^24995985 is an apocalyptic number.

24995985 is the 7070-th triangular number.

It is an amenable number.

24995985 is a deficient number, since it is larger than the sum of its proper divisors (21183087).

24995985 is a wasteful number, since it uses less digits than its factorization.

24995985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473.

The product of its digits is 1166400, while the sum is 51.

The square root of 24995985 is about 4999.5984838785. The cubic root of 24995985 is about 292.3861197416.

The spelling of 24995985 in words is "twenty-four million, nine hundred ninety-five thousand, nine hundred eighty-five".