25425100 has 36 divisors (see below), whose sum is σ = 55965168. Its totient is φ = 10024000.

The previous prime is 25425089. The next prime is 25425109. The reversal of 25425100 is 152452.

It is not an unprimeable number, because it can be changed into a prime (25425109) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5310 + ... + 8890.

It is an arithmetic number, because the mean of its divisors is an integer number (1554588).

Almost surely, 2^25425100 is an apocalyptic number.

25425100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25425100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27982584).

25425100 is an abundant number, since it is smaller than the sum of its proper divisors (30540068).

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

25425100 is a wasteful number, since it uses less digits than its factorization.

25425100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666 (or 3659 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25425100 is about 5042.3308102504. The cubic root of 25425100 is about 294.0498010566.

Adding to 25425100 its reverse (152452), we get a palindrome (25577552).

The spelling of 25425100 in words is "twenty-five million, four hundred twenty-five thousand, one hundred".