25488864 has 48 divisors (see below), whose sum is σ = 74345040. Its totient is φ = 8496000.

The previous prime is 25488863. The next prime is 25488871. The reversal of 25488864 is 46888452.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25488863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13887 + ... + 15614.

It is an arithmetic number, because the mean of its divisors is an integer number (1548855).

Almost surely, 2^25488864 is an apocalyptic number.

25488864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25488864 is an abundant number, since it is smaller than the sum of its proper divisors (48856176).

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

25488864 is a wasteful number, since it uses less digits than its factorization.

25488864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29520 (or 29506 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 25488864 is about 5048.6497204698. The cubic root of 25488864 is about 294.2954131882.

The spelling of 25488864 in words is "twenty-five million, four hundred eighty-eight thousand, eight hundred sixty-four".