25789539 has 4 divisors (see below), whose sum is σ = 34386056. Its totient is φ = 17193024.

The previous prime is 25789537. The next prime is 25789541. The reversal of 25789539 is 93598752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25789537) and next prime (25789541).

It is not a de Polignac number, because 25789539 - 2¹ = 25789537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25789537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298254 + ... + 4298259.

It is an arithmetic number, because the mean of its divisors is an integer number (8596514).

Almost surely, 2^25789539 is an apocalyptic number.

25789539 is a deficient number, since it is larger than the sum of its proper divisors (8596517).

25789539 is an equidigital number, since it uses as much as digits as its factorization.

25789539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8596516.

The product of its digits is 680400, while the sum is 48.

The square root of 25789539 is about 5078.3401815948. The cubic root of 25789539 is about 295.4480942726.

The spelling of 25789539 in words is "twenty-five million, seven hundred eighty-nine thousand, five hundred thirty-nine".