25006530 has 32 divisors (see below), whose sum is σ = 60156288. Its totient is φ = 6652800.

The previous prime is 25006519. The next prime is 25006549. The reversal of 25006530 is 3560052.

It is a junction number, because it is equal to n+sod(n) for n = 25006497 and 25006506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18270 + ... + 19590.

It is an arithmetic number, because the mean of its divisors is an integer number (1879884).

Almost surely, 2^25006530 is an apocalyptic number.

25006530 is an abundant number, since it is smaller than the sum of its proper divisors (35149758).

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

25006530 is a wasteful number, since it uses less digits than its factorization.

25006530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 25006530 is about 5000.6529573647. The cubic root of 25006530 is about 292.4272300528.

Adding to 25006530 its reverse (3560052), we get a palindrome (28566582).

The spelling of 25006530 in words is "twenty-five million, six thousand, five hundred thirty".