25989485 has 4 divisors (see below), whose sum is σ = 31187388. Its totient is φ = 20791584.

The previous prime is 25989463. The next prime is 25989487. The reversal of 25989485 is 58498952.

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 7214596 + 18774889 = 2686^2 + 4333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25989485 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 (25989487) 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, 2598944 + ... + 2598953.

It is an arithmetic number, because the mean of its divisors is an integer number (7796847).

Almost surely, 2^25989485 is an apocalyptic number.

It is an amenable number.

25989485 is a deficient number, since it is larger than the sum of its proper divisors (5197903).

25989485 is an equidigital number, since it uses as much as digits as its factorization.

25989485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197902.

The product of its digits is 1036800, while the sum is 50.

The square root of 25989485 is about 5097.9883287430. The cubic root of 25989485 is about 296.2096647299.

The spelling of 25989485 in words is "twenty-five million, nine hundred eighty-nine thousand, four hundred eighty-five".