25043530 has 16 divisors (see below), whose sum is σ = 46633320. Its totient is φ = 9671872.

The previous prime is 25043521. The next prime is 25043537. The reversal of 25043530 is 3534052.

It can be written as a sum of positive squares in 4 ways, for example, as 22005481 + 3038049 = 4691^2 + 1743^2 .

It is not an unprimeable number, because it can be changed into a prime (25043537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42889 + ... + 43468.

Almost surely, 2^25043530 is an apocalyptic number.

25043530 is a deficient number, since it is larger than the sum of its proper divisors (21589790).

25043530 is a wasteful number, since it uses less digits than its factorization.

25043530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86393.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 25043530 is about 5004.3511067870. The cubic root of 25043530 is about 292.5713854063.

Adding to 25043530 its reverse (3534052), we get a palindrome (28577582).

The spelling of 25043530 in words is "twenty-five million, forty-three thousand, five hundred thirty".