25561050 has 96 divisors (see below), whose sum is σ = 68567040. Its totient is φ = 6283200.

The previous prime is 25561033. The next prime is 25561051. The reversal of 25561050 is 5016552.

It is a self number, because there is not a number n which added to its sum of digits gives 25561050.

It is not an unprimeable number, because it can be changed into a prime (25561051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106831 + ... + 107069.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^25561050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25561050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34283520).

25561050 is an abundant number, since it is smaller than the sum of its proper divisors (43005990).

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

25561050 is a wasteful number, since it uses less digits than its factorization.

25561050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 25561050 is about 5055.7937062345. The cubic root of 25561050 is about 294.5729721177.

The spelling of 25561050 in words is "twenty-five million, five hundred sixty-one thousand, fifty".