25612530 has 32 divisors (see below), whose sum is σ = 61603200. Its totient is φ = 6815232.

The previous prime is 25612519. The next prime is 25612537. The reversal of 25612530 is 3521652.

It is a self number, because there is not a number n which added to its sum of digits gives 25612530.

It is not an unprimeable number, because it can be changed into a prime (25612537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27106 + ... + 28034.

It is an arithmetic number, because the mean of its divisors is an integer number (1925100).

Almost surely, 2^25612530 is an apocalyptic number.

25612530 is an abundant number, since it is smaller than the sum of its proper divisors (35990670).

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

25612530 is a wasteful number, since it uses less digits than its factorization.

25612530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25612530 is about 5060.8823341390. The cubic root of 25612530 is about 294.7705963345.

The spelling of 25612530 in words is "twenty-five million, six hundred twelve thousand, five hundred thirty".