25829765 has 16 divisors (see below), whose sum is σ = 33587568. Its totient is φ = 18955776.

The previous prime is 25829717. The next prime is 25829767. The reversal of 25829765 is 56792852.

It can be written as a sum of positive squares in 8 ways, for example, as 43681 + 25786084 = 209^2 + 5078^2 .

It is a cyclic number.

It is not a de Polignac number, because 25829765 - 2⁶ = 25829701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25829767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10097 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (2099223).

Almost surely, 2^25829765 is an apocalyptic number.

It is an amenable number.

25829765 is a deficient number, since it is larger than the sum of its proper divisors (7757803).

25829765 is a wasteful number, since it uses less digits than its factorization.

25829765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its digits is 302400, while the sum is 44.

The square root of 25829765 is about 5082.2991844243. The cubic root of 25829765 is about 295.6016257907.

The spelling of 25829765 in words is "twenty-five million, eight hundred twenty-nine thousand, seven hundred sixty-five".