15550204302425 has 24 divisors (see below), whose sum is σ = 20765990724864. Its totient is φ = 11482958410560.

The previous prime is 15550204302407. The next prime is 15550204302481. The reversal of 15550204302425 is 52420340205551.

It is not a de Polignac number, because 15550204302425 - 2⁴² = 11152157791321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 13885454 + ... + 14963496.

It is an arithmetic number, because the mean of its divisors is an integer number (865249613536).

Almost surely, 2^{15550204302425} is an apocalyptic number.

It is an amenable number.

15550204302425 is a deficient number, since it is larger than the sum of its proper divisors (5215786422439).

15550204302425 is a wasteful number, since it uses less digits than its factorization.

15550204302425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122449 (or 1122444 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 15550204302425 its reverse (52420340205551), we get a palindrome (67970544507976).

The spelling of 15550204302425 in words is "fifteen trillion, five hundred fifty billion, two hundred four million, three hundred two thousand, four hundred twenty-five".