15472125769 has 9 divisors (see below), whose sum is σ = 15583751143. Its totient is φ = 15361296952.

The previous prime is 15472125763. The next prime is 15472125811. The reversal of 15472125769 is 96752127451.

It is a happy number.

The square root of 15472125769 is 124387.

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

It can be written as a sum of positive squares in only one way, i.e., 14074263225 + 1397862544 = 118635^2 + 37388^2 .

It is not a de Polignac number, because 15472125769 - 2²⁹ = 14935254857 is a prime.

It is a super-2 number, since 2×15472125769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15472125763) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 21518592 + ... + 21519310.

Almost surely, 2^15472125769 is an apocalyptic number.

15472125769 is the 124387-th square number.

15472125769 is the 62194-th centered octagonal number.

It is an amenable number.

15472125769 is a deficient number, since it is larger than the sum of its proper divisors (111625374).

15472125769 is an frugal number, since it uses more digits than its factorization.

15472125769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 892 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

Multiplying 15472125769 by its sum of digits (49), we get a square (758134162681 = 870709²).

The spelling of 15472125769 in words is "fifteen billion, four hundred seventy-two million, one hundred twenty-five thousand, seven hundred sixty-nine".