25880765 has 8 divisors (see below), whose sum is σ = 31085880. Its totient is φ = 20685312.

The previous prime is 25880761. The next prime is 25880791. The reversal of 25880765 is 56708852.

It can be written as a sum of positive squares in 4 ways, for example, as 15194404 + 10686361 = 3898^2 + 3269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25880765 - 2² = 25880761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25880761) 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, 6437 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (3885735).

Almost surely, 2^25880765 is an apocalyptic number.

It is an amenable number.

25880765 is a deficient number, since it is larger than the sum of its proper divisors (5205115).

25880765 is a wasteful number, since it uses less digits than its factorization.

25880765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 25880765 is about 5087.3141243686. The cubic root of 25880765 is about 295.7960496997.

The spelling of 25880765 in words is "twenty-five million, eight hundred eighty thousand, seven hundred sixty-five".