25145250 has 64 divisors (see below), whose sum is σ = 67616640. Its totient is φ = 6187200.

The previous prime is 25145221. The next prime is 25145273. The reversal of 25145250 is 5254152.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25145250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8461 + ... + 11039.

It is an arithmetic number, because the mean of its divisors is an integer number (1056510).

Almost surely, 2^25145250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25145250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33808320).

25145250 is an abundant number, since it is smaller than the sum of its proper divisors (42471390).

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

25145250 is a wasteful number, since it uses less digits than its factorization.

25145250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25145250 is about 5014.5039635043. The cubic root of 25145250 is about 292.9669654114.

The spelling of 25145250 in words is "twenty-five million, one hundred forty-five thousand, two hundred fifty".