25112550 has 96 divisors (see below), whose sum is σ = 67495680. Its totient is φ = 6160000.

The previous prime is 25112501. The next prime is 25112551. The reversal of 25112550 is 5521152.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112551) 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, 99925 + ... + 100175.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^25112550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25112550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33747840).

25112550 is an abundant number, since it is smaller than the sum of its proper divisors (42383130).

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

25112550 is a wasteful number, since it uses less digits than its factorization.

25112550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25112550 is about 5011.2423609321. The cubic root of 25112550 is about 292.8399145696.

It can be divided in two parts, 25 and 112550, that added together give a triangular number (112575 = T₄₇₄).

The spelling of 25112550 in words is "twenty-five million, one hundred twelve thousand, five hundred fifty".