25507768 has 48 divisors (see below), whose sum is σ = 56642040. Its totient is φ = 10697280.

The previous prime is 25507723. The next prime is 25507777. The reversal of 25507768 is 86770552.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 25507768.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11571 + ... + 13597.

Almost surely, 2^25507768 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 25507768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28321020).

25507768 is an abundant number, since it is smaller than the sum of its proper divisors (31134272).

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

25507768 is a wasteful number, since it uses less digits than its factorization.

25507768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 25507768 is about 5050.5215572256. The cubic root of 25507768 is about 294.3681506483.

The spelling of 25507768 in words is "twenty-five million, five hundred seven thousand, seven hundred sixty-eight".