25001730 has 128 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 5778432.

The previous prime is 25001707. The next prime is 25001749. The reversal of 25001730 is 3710052.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59461 + ... + 59879.

It is an arithmetic number, because the mean of its divisors is an integer number (595350).

Almost surely, 2^25001730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25001730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38102400).

25001730 is an abundant number, since it is smaller than the sum of its proper divisors (51203070).

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

25001730 is a wasteful number, since it uses less digits than its factorization.

25001730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 25001730 is about 5000.1729970072. The cubic root of 25001730 is about 292.4085184000.

Adding to 25001730 its reverse (3710052), we get a palindrome (28711782).

It can be divided in two parts, 250017 and 30, that added together give a cube (250047 = 63³).

The spelling of 25001730 in words is "twenty-five million, one thousand, seven hundred thirty".