15626750049 has 9 divisors (see below), whose sum is σ = 22572514003. Its totient is φ = 10417583352.

The previous prime is 15626750023. The next prime is 15626750057. The reversal of 15626750049 is 94005762651.

The square root of 15626750049 is 125007.

It is a perfect power (a square), and thus also a powerful number.

15626750049 is a `hidden beast` number, since 15 + 626 + 7 + 5 + 0 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2341882449 + 13284867600 = 48393^2 + 115260^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 15626750049 - 2³¹ = 13479266401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15626749986 and 15626750013.

It is not an unprimeable number, because it can be changed into a prime (15626750749) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 354187 + ... + 395855.

Almost surely, 2^15626750049 is an apocalyptic number.

15626750049 is the 125007-th square number.

15626750049 is the 62504-th centered octagonal number.

It is an amenable number.

15626750049 is a deficient number, since it is larger than the sum of its proper divisors (6945763954).

15626750049 is an frugal number, since it uses more digits than its factorization.

15626750049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83344 (or 41672 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 15626750049 in words is "fifteen billion, six hundred twenty-six million, seven hundred fifty thousand, forty-nine".