1025109675529 has 9 divisors (see below), whose sum is σ = 1061707612693. Its totient is φ = 989732716672.

The previous prime is 1025109675503. The next prime is 1025109675547. The reversal of 1025109675529 is 9255769015201.

The square root of 1025109675529 is 1012477.

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

1025109675529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 50623225 + 1025059052304 = 7115^2 + 1012452^2 .

It is not a de Polignac number, because 1025109675529 - 2²¹ = 1025107578377 is a prime.

It is a super-2 number, since 2×1025109675529² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025109672529) 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, 29344377 + ... + 29379289.

Almost surely, 2^{1025109675529} is an apocalyptic number.

1025109675529 is the 1012477-th square number.

1025109675529 is the 506239-th centered octagonal number.

It is an amenable number.

1025109675529 is a deficient number, since it is larger than the sum of its proper divisors (36597937164).

1025109675529 is an frugal number, since it uses more digits than its factorization.

1025109675529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69884 (or 34942 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 1025109675529 in words is "one trillion, twenty-five billion, one hundred nine million, six hundred seventy-five thousand, five hundred twenty-nine".