15551150115425 has 6 divisors (see below), whose sum is σ = 19283426143158. Its totient is φ = 12440920092320.

The previous prime is 15551150115409. The next prime is 15551150115433. The reversal of 15551150115425 is 52451105115551.

It can be written as a sum of positive squares in 3 ways, for example, as 463526765584 + 15087623349841 = 680828^2 + 3884279^2 .

It is not a de Polignac number, because 15551150115425 - 2⁴ = 15551150115409 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 5 ways as a sum of consecutive naturals, for example, 311023002284 + ... + 311023002333.

It is an arithmetic number, because the mean of its divisors is an integer number (3213904357193).

Almost surely, 2^{15551150115425} is an apocalyptic number.

It is an amenable number.

15551150115425 is a deficient number, since it is larger than the sum of its proper divisors (3732276027733).

15551150115425 is an equidigital number, since it uses as much as digits as its factorization.

15551150115425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622046004627 (or 622046004622 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 41.

The spelling of 15551150115425 in words is "fifteen trillion, five hundred fifty-one billion, one hundred fifty million, one hundred fifteen thousand, four hundred twenty-five".