25783380 has 192 divisors, whose sum is σ = 96768000. Its totient is φ = 5567616.

The previous prime is 25783367. The next prime is 25783397. The reversal of 25783380 is 8338752.

25783380 is a `hidden beast` number, since 2 + 578 + 3 + 3 + 80 = 666.

It is a super-3 number, since 3×25783380³ (a number of 23 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 71641 + ... + 71999.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^25783380 is an apocalyptic number.

25783380 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 25783380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48384000).

25783380 is an abundant number, since it is smaller than the sum of its proper divisors (70984620).

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

25783380 is a wasteful number, since it uses less digits than its factorization.

25783380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 25783380 is about 5077.7337464660. The cubic root of 25783380 is about 295.4245729825.

The spelling of 25783380 in words is "twenty-five million, seven hundred eighty-three thousand, three hundred eighty".