25180830 has 48 divisors (see below), whose sum is σ = 66718080. Its totient is φ = 6586944.

The previous prime is 25180829. The next prime is 25180849. The reversal of 25180830 is 3808152.

It is a happy number.

It is a super-3 number, since 3×25180830³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25180794 and 25180803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2131 + ... + 7409.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^25180830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25180830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33359040).

25180830 is an abundant number, since it is smaller than the sum of its proper divisors (41537250).

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

25180830 is a wasteful number, since it uses less digits than its factorization.

25180830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345 (or 5342 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 25180830 is about 5018.0504182401. The cubic root of 25180830 is about 293.1050809868.

Adding to 25180830 its reverse (3808152), we get a palindrome (28988982).

The spelling of 25180830 in words is "twenty-five million, one hundred eighty thousand, eight hundred thirty".