25489984 has 28 divisors (see below), whose sum is σ = 54474364. Its totient is φ = 11764224.

The previous prime is 25489969. The next prime is 25489999. The reversal of 25489984 is 48998452.

It is an interprime number because it is at equal distance from previous prime (25489969) and next prime (25489999).

It can be written as a sum of positive squares in 2 ways, for example, as 14992384 + 10497600 = 3872^2 + 3240^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14487 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (1945513).

Almost surely, 2^25489984 is an apocalyptic number.

It is an amenable number.

25489984 is an abundant number, since it is smaller than the sum of its proper divisors (28984380).

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

25489984 is a wasteful number, since it uses less digits than its factorization.

25489984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30662 (or 30652 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 25489984 is about 5048.7606399987. The cubic root of 25489984 is about 294.2997236462.

The spelling of 25489984 in words is "twenty-five million, four hundred eighty-nine thousand, nine hundred eighty-four".