25981230 has 64 divisors (see below), whose sum is σ = 68656896. Its totient is φ = 6240000.

The previous prime is 25981217. The next prime is 25981297. The reversal of 25981230 is 3218952.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 42930 + ... + 43530.

It is an arithmetic number, because the mean of its divisors is an integer number (1072764).

Almost surely, 2^25981230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25981230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34328448).

25981230 is an abundant number, since it is smaller than the sum of its proper divisors (42675666).

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

25981230 is a wasteful number, since it uses less digits than its factorization.

25981230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 25981230 is about 5097.1786313607. The cubic root of 25981230 is about 296.1782998694.

It can be divided in two parts, 2598 and 1230, that added together give a triangular number (3828 = T₈₇).

The spelling of 25981230 in words is "twenty-five million, nine hundred eighty-one thousand, two hundred thirty".