25040664 has 96 divisors (see below), whose sum is σ = 76789440. Its totient is φ = 7581600.

The previous prime is 25040621. The next prime is 25040681. The reversal of 25040664 is 46604052.

It is a happy number.

25040664 is a `hidden beast` number, since 250 + 406 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 20799 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (799890).

Almost surely, 2^25040664 is an apocalyptic number.

25040664 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 25040664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38394720).

25040664 is an abundant number, since it is smaller than the sum of its proper divisors (51748776).

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

25040664 is a wasteful number, since it uses less digits than its factorization.

25040664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1187 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 25040664 is about 5004.0647477825. The cubic root of 25040664 is about 292.5602242857.

The spelling of 25040664 in words is "twenty-five million, forty thousand, six hundred sixty-four".