25530522 has 8 divisors (see below), whose sum is σ = 51061056. Its totient is φ = 8510172.

The previous prime is 25530517. The next prime is 25530553. The reversal of 25530522 is 22503552.

It is a sphenic number, since it is the product of 3 distinct primes.

25530522 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25530492 and 25530501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127538 + ... + 2127549.

It is an arithmetic number, because the mean of its divisors is an integer number (6382632).

Almost surely, 2^25530522 is an apocalyptic number.

25530522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25530522 is a wasteful number, since it uses less digits than its factorization.

25530522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255092.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 25530522 is about 5052.7736937251. The cubic root of 25530522 is about 294.4556542177.

The spelling of 25530522 in words is "twenty-five million, five hundred thirty thousand, five hundred twenty-two".