25530004 has 6 divisors (see below), whose sum is σ = 44677514. Its totient is φ = 12765000.

The previous prime is 25529993. The next prime is 25530007. The reversal of 25530004 is 40003552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23541904 + 1988100 = 4852^2 + 1410^2 .

It is a super-2 number, since 2×25530004² = 1303562208480032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3191247 + ... + 3191254.

Almost surely, 2^25530004 is an apocalyptic number.

It is an amenable number.

25530004 is a deficient number, since it is larger than the sum of its proper divisors (19147510).

25530004 is a wasteful number, since it uses less digits than its factorization.

25530004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382505 (or 6382503 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25530004 is about 5052.7224344901. The cubic root of 25530004 is about 294.4536627574.

Adding to 25530004 its reverse (40003552), we get a palindrome (65533556).

The spelling of 25530004 in words is "twenty-five million, five hundred thirty thousand, four".