25005530 has 32 divisors (see below), whose sum is σ = 50692608. Its totient is φ = 8798400.

The previous prime is 25005527. The next prime is 25005553. The reversal of 25005530 is 3550052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (1584144).

Almost surely, 2^25005530 is an apocalyptic number.

25005530 is an abundant number, since it is smaller than the sum of its proper divisors (25687078).

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

25005530 is a wasteful number, since it uses less digits than its factorization.

25005530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 25005530 is about 5000.5529694225. The cubic root of 25005530 is about 292.4233319893.

Adding to 25005530 its reverse (3550052), we get a palindrome (28555582).

The spelling of 25005530 in words is "twenty-five million, five thousand, five hundred thirty".