25172850 has 48 divisors (see below), whose sum is σ = 62754912. Its totient is φ = 6677760.

The previous prime is 25172843. The next prime is 25172867. The reversal of 25172850 is 5827152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42154 + ... + 42746.

It is an arithmetic number, because the mean of its divisors is an integer number (1307394).

Almost surely, 2^25172850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25172850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31377456).

25172850 is an abundant number, since it is smaller than the sum of its proper divisors (37582062).

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

25172850 is a wasteful number, since it uses less digits than its factorization.

25172850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25172850 is about 5017.2552257185. The cubic root of 25172850 is about 293.0741152923.

The spelling of 25172850 in words is "twenty-five million, one hundred seventy-two thousand, eight hundred fifty".