25105050 has 72 divisors (see below), whose sum is σ = 68942016. Its totient is φ = 6546720.

The previous prime is 25105049. The next prime is 25105057. The reversal of 25105050 is 5050152.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25105057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20557 + ... + 21743.

It is an arithmetic number, because the mean of its divisors is an integer number (957528).

Almost surely, 2^25105050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25105050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34471008).

25105050 is an abundant number, since it is smaller than the sum of its proper divisors (43836966).

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

25105050 is a wasteful number, since it uses less digits than its factorization.

25105050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 25105050 is about 5010.4939876224. The cubic root of 25105050 is about 292.8107589212.

The spelling of 25105050 in words is "twenty-five million, one hundred five thousand, fifty".