125004552320 has 128 divisors (see below), whose sum is σ = 324136436400. Its totient is φ = 45912555520.

The previous prime is 125004552301. The next prime is 125004552331. The reversal of 125004552320 is 23255400521.

It can be written as a sum of positive squares in 8 ways, for example, as 74040586816 + 50963965504 = 272104^2 + 225752^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×125004552320² (a number of 23 digits) contains 22 as substring.

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, 305966 + ... + 586194.

Almost surely, 2^125004552320 is an apocalyptic number.

125004552320 is a gapful number since it is divisible by the number (10) 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 125004552320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162068218200).

125004552320 is an abundant number, since it is smaller than the sum of its proper divisors (199131884080).

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

125004552320 is a wasteful number, since it uses less digits than its factorization.

125004552320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280306 (or 280294 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 125004552320 its reverse (23255400521), we get a palindrome (148259952841).

The spelling of 125004552320 in words is "one hundred twenty-five billion, four million, five hundred fifty-two thousand, three hundred twenty".