25449120 has 192 divisors, whose sum is σ = 91808640. Its totient is φ = 6580224.

The previous prime is 25449103. The next prime is 25449131. The reversal of 25449120 is 2194452.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185692 + ... + 185828.

It is an arithmetic number, because the mean of its divisors is an integer number (478170).

Almost surely, 2^25449120 is an apocalyptic number.

25449120 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 25449120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45904320).

25449120 is an abundant number, since it is smaller than the sum of its proper divisors (66359520).

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

25449120 is a wasteful number, since it uses less digits than its factorization.

25449120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25449120 is about 5044.7120829637. The cubic root of 25449120 is about 294.1423716940.

It can be divided in two parts, 2544 and 9120, that added together give a square (11664 = 108²).

The spelling of 25449120 in words is "twenty-five million, four hundred forty-nine thousand, one hundred twenty".