25754793289 has 3 divisors (see below), whose sum is σ = 25754953773. Its totient is φ = 25754632806.

The previous prime is 25754793287. The next prime is 25754793293. The reversal of 25754793289 is 98239745752.

The square root of 25754793289 is 160483.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 25754793289 - 2¹ = 25754793287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25754793287) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 80242 + ... + 240724.

It is an arithmetic number, because the mean of its divisors is an integer number (8584984591).

Almost surely, 2^25754793289 is an apocalyptic number.

25754793289 is the 160483-rd square number.

25754793289 is the 80242-nd centered octagonal number.

It is an amenable number.

25754793289 is a deficient number, since it is larger than the sum of its proper divisors (160484).

25754793289 is an frugal number, since it uses more digits than its factorization.

25754793289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320966 (or 160483 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 61.

The spelling of 25754793289 in words is "twenty-five billion, seven hundred fifty-four million, seven hundred ninety-three thousand, two hundred eighty-nine".