15512125552 has 80 divisors (see below), whose sum is σ = 37821364992. Its totient is φ = 5987151360.

The previous prime is 15512125537. The next prime is 15512125553. The reversal of 15512125552 is 25552121551.

It is a super-2 number, since 2×15512125552² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15512125553) 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 15 ways as a sum of consecutive naturals, for example, 72988 + ... + 190660.

Almost surely, 2^15512125552 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 15512125552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18910682496).

15512125552 is an abundant number, since it is smaller than the sum of its proper divisors (22309239440).

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

15512125552 is a wasteful number, since it uses less digits than its factorization.

15512125552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117806 (or 117800 counting only the distinct ones).

The product of its digits is 25000, while the sum is 34.

The spelling of 15512125552 in words is "fifteen billion, five hundred twelve million, one hundred twenty-five thousand, five hundred fifty-two".