25530750 has 96 divisors (see below), whose sum is σ = 78945984. Its totient is φ = 5832000.

The previous prime is 25530749. The next prime is 25530761. The reversal of 25530750 is 5703552.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14940 + ... + 16560.

It is an arithmetic number, because the mean of its divisors is an integer number (822354).

Almost surely, 2^25530750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25530750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39472992).

25530750 is an abundant number, since it is smaller than the sum of its proper divisors (53415234).

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

25530750 is a wasteful number, since it uses less digits than its factorization.

25530750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 25530750 is about 5052.7962555401. The cubic root of 25530750 is about 294.4565307592.

The spelling of 25530750 in words is "twenty-five million, five hundred thirty thousand, seven hundred fifty".