25040064 has 112 divisors (see below), whose sum is σ = 78288896. Its totient is φ = 6912000.

The previous prime is 25040051. The next prime is 25040107. The reversal of 25040064 is 46004052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 25040064.

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, 41364 + ... + 41964.

It is an arithmetic number, because the mean of its divisors is an integer number (699008).

Almost surely, 2^25040064 is an apocalyptic number.

25040064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25040064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39144448).

25040064 is an abundant number, since it is smaller than the sum of its proper divisors (53248832).

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

25040064 is a wasteful number, since it uses less digits than its factorization.

25040064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 25040064 is about 5004.0047961608. The cubic root of 25040064 is about 292.5578875860.

The spelling of 25040064 in words is "twenty-five million, forty thousand, sixty-four".