25432765 has 12 divisors (see below), whose sum is σ = 32373756. Its totient is φ = 19114368.

The previous prime is 25432753. The next prime is 25432783. The reversal of 25432765 is 56723452.

It can be written as a sum of positive squares in 2 ways, for example, as 14661241 + 10771524 = 3829^2 + 3282^2 .

It is not a de Polignac number, because 25432765 - 2¹⁷ = 25301693 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25432765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46222 + ... + 46768.

It is an arithmetic number, because the mean of its divisors is an integer number (2697813).

Almost surely, 2^25432765 is an apocalyptic number.

It is an amenable number.

25432765 is a deficient number, since it is larger than the sum of its proper divisors (6940991).

25432765 is an frugal number, since it uses more digits than its factorization.

25432765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 569 counting only the distinct ones).

The product of its digits is 50400, while the sum is 34.

The square root of 25432765 is about 5043.0908181392. The cubic root of 25432765 is about 294.0793475188.

The spelling of 25432765 in words is "twenty-five million, four hundred thirty-two thousand, seven hundred sixty-five".