25494960 has 80 divisors (see below), whose sum is σ = 83208960. Its totient is φ = 6439680.

The previous prime is 25494949. The next prime is 25494967. The reversal of 25494960 is 6949452.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (25494967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765 + ... + 7355.

It is an arithmetic number, because the mean of its divisors is an integer number (1040112).

Almost surely, 2^25494960 is an apocalyptic number.

25494960 is a gapful number since it is divisible by the number (20) 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 25494960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41604480).

25494960 is an abundant number, since it is smaller than the sum of its proper divisors (57714000).

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

25494960 is a wasteful number, since it uses less digits than its factorization.

25494960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 25494960 is about 5049.2534101588. The cubic root of 25494960 is about 294.3188728689.

The spelling of 25494960 in words is "twenty-five million, four hundred ninety-four thousand, nine hundred sixty".