25725180 has 144 divisors (see below), whose sum is σ = 81164160. Its totient is φ = 6080256.

The previous prime is 25725169. The next prime is 25725187. The reversal of 25725180 is 8152752.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725187) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 435991 + ... + 436049.

It is an arithmetic number, because the mean of its divisors is an integer number (563640).

Almost surely, 2^25725180 is an apocalyptic number.

25725180 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 25725180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40582080).

25725180 is an abundant number, since it is smaller than the sum of its proper divisors (55438980).

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

25725180 is a wasteful number, since it uses less digits than its factorization.

25725180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25725180 is about 5071.9996056782. Note that the first 3 decimals coincide. The cubic root of 25725180 is about 295.2021213705.

The spelling of 25725180 in words is "twenty-five million, seven hundred twenty-five thousand, one hundred eighty".