25423400 has 48 divisors (see below), whose sum is σ = 59443740. Its totient is φ = 10112000.

The previous prime is 25423399. The next prime is 25423427. The reversal of 25423400 is 432452.

It can be written as a sum of positive squares in 6 ways, for example, as 10876804 + 14546596 = 3298^2 + 3814^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63200 + ... + 63600.

Almost surely, 2^25423400 is an apocalyptic number.

25423400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25423400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29721870).

25423400 is an abundant number, since it is smaller than the sum of its proper divisors (34020340).

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

25423400 is a wasteful number, since it uses less digits than its factorization.

25423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 25423400 is about 5042.1622345974. The cubic root of 25423400 is about 294.0432472207.

Adding to 25423400 its reverse (432452), we get a palindrome (25855852).

The spelling of 25423400 in words is "twenty-five million, four hundred twenty-three thousand, four hundred".