25486464 has 64 divisors (see below), whose sum is σ = 69914880. Its totient is φ = 8217600.

The previous prime is 25486457. The next prime is 25486469. The reversal of 25486464 is 46468452.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (25486469) 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, 10834 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (1092420).

Almost surely, 2^25486464 is an apocalyptic number.

25486464 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 25486464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34957440).

25486464 is an abundant number, since it is smaller than the sum of its proper divisors (44428416).

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

25486464 is a wasteful number, since it uses less digits than its factorization.

25486464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2177 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 25486464 is about 5048.4120275588. The cubic root of 25486464 is about 294.2861760672.

The spelling of 25486464 in words is "twenty-five million, four hundred eighty-six thousand, four hundred sixty-four".