25772816 has 40 divisors (see below), whose sum is σ = 55666080. Its totient is φ = 11487744.

The previous prime is 25772807. The next prime is 25772819. The reversal of 25772816 is 61827752.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 25772816.

It is not an unprimeable number, because it can be changed into a prime (25772819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (1391652).

Almost surely, 2^25772816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25772816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27833040).

25772816 is an abundant number, since it is smaller than the sum of its proper divisors (29893264).

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

25772816 is a wasteful number, since it uses less digits than its factorization.

25772816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5025 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 25772816 is about 5076.6934120547. The cubic root of 25772816 is about 295.3842202241.

The spelling of 25772816 in words is "twenty-five million, seven hundred seventy-two thousand, eight hundred sixteen".