25470 has 24 divisors (see below), whose sum is σ = 66456. Its totient is φ = 6768.

The previous prime is 25469. The next prime is 25471. The reversal of 25470 is 7452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25469) and next prime (25471).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25470.

It is not an unprimeable number, because it can be changed into a prime (25471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52 + ... + 231.

It is an arithmetic number, because the mean of its divisors is an integer number (2769).

2²⁵⁴⁷⁰ is an apocalyptic number.

25470 is an abundant number, since it is smaller than the sum of its proper divisors (40986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33228).

25470 is a wasteful number, since it uses less digits than its factorization.

25470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 25470 is about 159.5932329392. The cubic root of 25470 is about 29.4222793778.

Subtracting from 25470 its sum of digits (18), we obtain a palindrome (25452).

It can be divided in two parts, 254 and 70, that added together give a square (324 = 18²).

The spelling of 25470 in words is "twenty-five thousand, four hundred seventy".