25430 has 8 divisors (see below), whose sum is σ = 45792. Its totient is φ = 10168.

The previous prime is 25423. The next prime is 25439. The reversal of 25430 is 3452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹³ + 5³ + 4⁷ + 3⁶ + 0 .

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25439) by changing a digit.

25430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (5724).

2²⁵⁴³⁰ is an apocalyptic number.

25430 is a deficient number, since it is larger than the sum of its proper divisors (20362).

25430 is a wasteful number, since it uses less digits than its factorization.

25430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 25430 is about 159.4678651014. The cubic root of 25430 is about 29.4068689891.

Adding to 25430 its reverse (3452), we get a palindrome (28882).

The spelling of 25430 in words is "twenty-five thousand, four hundred thirty".