25469789 has 4 divisors (see below), whose sum is σ = 25525500. Its totient is φ = 25414080.

The previous prime is 25469771. The next prime is 25469797. The reversal of 25469789 is 98796452.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12924025 + 12545764 = 3595^2 + 3542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25469789 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 (25469489) 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, 27164 + ... + 28085.

It is an arithmetic number, because the mean of its divisors is an integer number (6381375).

Almost surely, 2^25469789 is an apocalyptic number.

It is an amenable number.

25469789 is a deficient number, since it is larger than the sum of its proper divisors (55711).

25469789 is an equidigital number, since it uses as much as digits as its factorization.

25469789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55710.

The product of its digits is 1088640, while the sum is 50.

The square root of 25469789 is about 5046.7602479214. The cubic root of 25469789 is about 294.2219813037.

The spelling of 25469789 in words is "twenty-five million, four hundred sixty-nine thousand, seven hundred eighty-nine".