129025248 has 96 divisors (see below), whose sum is σ = 375725952. Its totient is φ = 38438400.

The previous prime is 129025207. The next prime is 129025279. The reversal of 129025248 is 842520921.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63415 + ... + 65417.

It is an arithmetic number, because the mean of its divisors is an integer number (3913812).

Almost surely, 2^129025248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129025248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187862976).

129025248 is an abundant number, since it is smaller than the sum of its proper divisors (246700704).

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

129025248 is a wasteful number, since it uses less digits than its factorization.

129025248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 129025248 is about 11358.9281184450. The cubic root of 129025248 is about 505.3103970270.

The spelling of 129025248 in words is "one hundred twenty-nine million, twenty-five thousand, two hundred forty-eight".