15606049925 has 6 divisors (see below), whose sum is σ = 19351501938. Its totient is φ = 12484839920.

The previous prime is 15606049909. The next prime is 15606049933. The reversal of 15606049925 is 52994060651.

It can be written as a sum of positive squares in 3 ways, for example, as 360468196 + 15245581729 = 18986^2 + 123473^2 .

It is not a de Polignac number, because 15606049925 - 2⁴ = 15606049909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15606049925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312120974 + ... + 312121023.

It is an arithmetic number, because the mean of its divisors is an integer number (3225250323).

Almost surely, 2^15606049925 is an apocalyptic number.

It is an amenable number.

15606049925 is a deficient number, since it is larger than the sum of its proper divisors (3745452013).

15606049925 is an equidigital number, since it uses as much as digits as its factorization.

15606049925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624242007 (or 624242002 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 15606049925 in words is "fifteen billion, six hundred six million, forty-nine thousand, nine hundred twenty-five".