15530125300 has 36 divisors (see below), whose sum is σ = 33721615116. Its totient is φ = 6208134400.

The previous prime is 15530125241. The next prime is 15530125301. The reversal of 15530125300 is 352103551.

It can be written as a sum of positive squares in 6 ways, for example, as 157101156 + 15373024144 = 12534^2 + 123988^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15530125301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113160 + ... + 209440.

It is an arithmetic number, because the mean of its divisors is an integer number (936711531).

Almost surely, 2^15530125300 is an apocalyptic number.

15530125300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15530125300 is an abundant number, since it is smaller than the sum of its proper divisors (18191489816).

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

15530125300 is a wasteful number, since it uses less digits than its factorization.

15530125300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97908 (or 97901 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 15530125300 its reverse (352103551), we get a palindrome (15882228851).

The spelling of 15530125300 in words is "fifteen billion, five hundred thirty million, one hundred twenty-five thousand, three hundred".