25434450 has 72 divisors (see below), whose sum is σ = 70726500. Its totient is φ = 6545280.

The previous prime is 25434433. The next prime is 25434463. The reversal of 25434450 is 5443452.

It can be written as a sum of positive squares in 6 ways, for example, as 13593969 + 11840481 = 3687^2 + 3441^2 .

It is a super-2 number, since 2×25434450² = 1293822493605000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12076 + ... + 14024.

Almost surely, 2^25434450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25434450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35363250).

25434450 is an abundant number, since it is smaller than the sum of its proper divisors (45292050).

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

25434450 is a wasteful number, since it uses less digits than its factorization.

25434450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1988 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 25434450 is about 5043.2578756197. The cubic root of 25434450 is about 294.0858419333.

The spelling of 25434450 in words is "twenty-five million, four hundred thirty-four thousand, four hundred fifty".