15540225459 has 16 divisors (see below), whose sum is σ = 22624510464. Its totient is φ = 9409757600.

The previous prime is 15540225443. The next prime is 15540225529. The reversal of 15540225459 is 95452204551.

15540225459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15540225459 - 2⁴ = 15540225443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15540225459.

It is not an unprimeable number, because it can be changed into a prime (15540225439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177072 + ... + 249869.

It is an arithmetic number, because the mean of its divisors is an integer number (1414031904).

Almost surely, 2^15540225459 is an apocalyptic number.

15540225459 is a deficient number, since it is larger than the sum of its proper divisors (7084285005).

15540225459 is a wasteful number, since it uses less digits than its factorization.

15540225459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428058.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 15540225459 in words is "fifteen billion, five hundred forty million, two hundred twenty-five thousand, four hundred fifty-nine".