25593481 has 3 divisors (see below), whose sum is σ = 25598541. Its totient is φ = 25588422.

The previous prime is 25593461. The next prime is 25593493. The reversal of 25593481 is 18439552.

The square root of 25593481 is 5059.

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 25593481 - 2¹⁹ = 25069193 is a prime.

It is a super-2 number, since 2×25593481² = 1310052539394722, which contains 22 as substring.

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 25593481.

It is not an unprimeable number, because it can be changed into a prime (25593401) 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, 2530 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (8532847).

Almost surely, 2^25593481 is an apocalyptic number.

25593481 is the 5059-th square number.

25593481 is the 2530-th centered octagonal number.

It is an amenable number.

25593481 is a deficient number, since it is larger than the sum of its proper divisors (5060).

25593481 is an frugal number, since it uses more digits than its factorization.

25593481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118 (or 5059 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The cubic root of 25593481 is about 294.6975008910.

The spelling of 25593481 in words is "twenty-five million, five hundred ninety-three thousand, four hundred eighty-one".