25005776 has 40 divisors (see below), whose sum is σ = 51726600. Its totient is φ = 11669504.

The previous prime is 25005769. The next prime is 25005779. The reversal of 25005776 is 67750052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5776 + 25000000 = 76^2 + 5000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25005779) 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, 40220 + ... + 40836.

It is an arithmetic number, because the mean of its divisors is an integer number (1293165).

Almost surely, 2^25005776 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 25005776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25863300).

25005776 is an abundant number, since it is smaller than the sum of its proper divisors (26720824).

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

25005776 is a wasteful number, since it uses less digits than its factorization.

25005776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 25005776 is about 5000.5775666417. The cubic root of 25005776 is about 292.4242909225.

It can be divided in two parts, 2500 and 5776, that multiplied together give a square (14440000 = 3800²).

The spelling of 25005776 in words is "twenty-five million, five thousand, seven hundred seventy-six".