25493328 has 90 divisors (see below), whose sum is σ = 83017194. Its totient is φ = 7281792.

The previous prime is 25493323. The next prime is 25493329. The reversal of 25493328 is 82339452.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 12446784 = 3612^2 + 3528^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 25493292 and 25493301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25493323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5250 + ... + 8862.

Almost surely, 2^25493328 is an apocalyptic number.

25493328 is a gapful number since it is divisible by the number (28) 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 25493328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41508597).

25493328 is an abundant number, since it is smaller than the sum of its proper divisors (57523866).

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

25493328 is a wasteful number, since it uses less digits than its factorization.

25493328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3625 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 25493328 is about 5049.0917995220. The cubic root of 25493328 is about 294.3125926911.

The spelling of 25493328 in words is "twenty-five million, four hundred ninety-three thousand, three hundred twenty-eight".