25621120 has 192 divisors, whose sum is σ = 76744800. Its totient is φ = 8128512.

The previous prime is 25621117. The next prime is 25621129. The reversal of 25621120 is 2112652.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25621129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595819 + ... + 595861.

Almost surely, 2^25621120 is an apocalyptic number.

25621120 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 25621120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38372400).

25621120 is an abundant number, since it is smaller than the sum of its proper divisors (51123680).

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

25621120 is a wasteful number, since it uses less digits than its factorization.

25621120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 25621120 is about 5061.7309292375. The cubic root of 25621120 is about 294.8035463060.

Adding to 25621120 its reverse (2112652), we get a palindrome (27733772).

The spelling of 25621120 in words is "twenty-five million, six hundred twenty-one thousand, one hundred twenty".