25123104 has 72 divisors (see below), whose sum is σ = 72373392. Its totient is φ = 8265600.

The previous prime is 25123103. The next prime is 25123129. The reversal of 25123104 is 40132152.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (25123103) 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, 23379 + ... + 24429.

It is an arithmetic number, because the mean of its divisors is an integer number (1005186).

Almost surely, 2^25123104 is an apocalyptic number.

25123104 is a gapful number since it is divisible by the number (24) 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 25123104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36186696).

25123104 is an abundant number, since it is smaller than the sum of its proper divisors (47250288).

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

25123104 is a wasteful number, since it uses less digits than its factorization.

25123104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25123104 is about 5012.2952826026. The cubic root of 25123104 is about 292.8809325679.

Adding to 25123104 its reverse (40132152), we get a palindrome (65255256).

The spelling of 25123104 in words is "twenty-five million, one hundred twenty-three thousand, one hundred four".