15530213425 has 12 divisors (see below), whose sum is σ = 19298715696. Its totient is φ = 12397557200.

The previous prime is 15530213423. The next prime is 15530213459. The reversal of 15530213425 is 52431203551.

It is not a de Polignac number, because 15530213425 - 2¹ = 15530213423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15530213423) 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, 653431 + ... + 676780.

It is an arithmetic number, because the mean of its divisors is an integer number (1608226308).

Almost surely, 2^15530213425 is an apocalyptic number.

It is an amenable number.

15530213425 is a deficient number, since it is larger than the sum of its proper divisors (3768502271).

15530213425 is a wasteful number, since it uses less digits than its factorization.

15530213425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330688 (or 1330683 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 15530213425 its reverse (52431203551), we get a palindrome (67961416976).

The spelling of 15530213425 in words is "fifteen billion, five hundred thirty million, two hundred thirteen thousand, four hundred twenty-five".