25620480 has 156 divisors (see below), whose sum is σ = 89445720. Its totient is φ = 6782976.

The previous prime is 25620473. The next prime is 25620481. The reversal of 25620480 is 8402652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184251 + ... + 184389.

It is an arithmetic number, because the mean of its divisors is an integer number (573370).

Almost surely, 2^25620480 is an apocalyptic number.

25620480 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 25620480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44722860).

25620480 is an abundant number, since it is smaller than the sum of its proper divisors (63825240).

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

25620480 is a wasteful number, since it uses less digits than its factorization.

25620480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25620480 is about 5061.6677093622. The cubic root of 25620480 is about 294.8010916145.

It can be divided in two parts, 256 and 20480, that added together give a 4-th power (20736 = 12⁴).

The spelling of 25620480 in words is "twenty-five million, six hundred twenty thousand, four hundred eighty".