25772040 has 192 divisors, whose sum is σ = 100137600. Its totient is φ = 5878656.

The previous prime is 25772009. The next prime is 25772053. The reversal of 25772040 is 4027752.

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

It is a junction number, because it is equal to n+sod(n) for n = 25771995 and 25772013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52677 + ... + 53163.

It is an arithmetic number, because the mean of its divisors is an integer number (521550).

Almost surely, 2^25772040 is an apocalyptic number.

25772040 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 25772040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50068800).

25772040 is an abundant number, since it is smaller than the sum of its proper divisors (74365560).

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

25772040 is a wasteful number, since it uses less digits than its factorization.

25772040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 25772040 is about 5076.6169837797. The cubic root of 25772040 is about 295.3812555958.

Adding to 25772040 its reverse (4027752), we get a palindrome (29799792).

The spelling of 25772040 in words is "twenty-five million, seven hundred seventy-two thousand, forty".