15525536380 has 12 divisors (see below), whose sum is σ = 32603626440. Its totient is φ = 6210214544.

The previous prime is 15525536363. The next prime is 15525536387. The reversal of 15525536380 is 8363552551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15525536387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388138390 + ... + 388138429.

It is an arithmetic number, because the mean of its divisors is an integer number (2716968870).

Almost surely, 2^15525536380 is an apocalyptic number.

15525536380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15525536380 is an abundant number, since it is smaller than the sum of its proper divisors (17078090060).

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

15525536380 is a wasteful number, since it uses less digits than its factorization.

15525536380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776276828 (or 776276826 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 15525536380 in words is "fifteen billion, five hundred twenty-five million, five hundred thirty-six thousand, three hundred eighty".