25572144 has 80 divisors (see below), whose sum is σ = 71995392. Its totient is φ = 7774464.

The previous prime is 25572137. The next prime is 25572181. The reversal of 25572144 is 44127552.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66577 + ... + 66959.

Almost surely, 2^25572144 is an apocalyptic number.

25572144 is a gapful number since it is divisible by the number (24) 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 25572144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35997696).

25572144 is an abundant number, since it is smaller than the sum of its proper divisors (46423248).

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

25572144 is a wasteful number, since it uses less digits than its factorization.

25572144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 508 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 25572144 is about 5056.8907443211. The cubic root of 25572144 is about 294.6155827809.

Adding to 25572144 its reverse (44127552), we get a palindrome (69699696).

The spelling of 25572144 in words is "twenty-five million, five hundred seventy-two thousand, one hundred forty-four".