25611768 has 128 divisors (see below), whose sum is σ = 87628800. Its totient is φ = 6749568.

The previous prime is 25611749. The next prime is 25611769. The reversal of 25611768 is 86711652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25611769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19005 + ... + 20307.

It is an arithmetic number, because the mean of its divisors is an integer number (684600).

Almost surely, 2^25611768 is an apocalyptic number.

25611768 is a gapful number since it is divisible by the number (28) 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 25611768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43814400).

25611768 is an abundant number, since it is smaller than the sum of its proper divisors (62017032).

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

25611768 is a wasteful number, since it uses less digits than its factorization.

25611768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1328 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 25611768 is about 5060.8070502638. The cubic root of 25611768 is about 294.7676730593.

The spelling of 25611768 in words is "twenty-five million, six hundred eleven thousand, seven hundred sixty-eight".