1023729625 has 8 divisors (see below), whose sum is σ = 1277614728. Its totient is φ = 818983600.

The previous prime is 1023729569. The next prime is 1023729659. The reversal of 1023729625 is 5269273201.

It can be written as a sum of positive squares in 4 ways, for example, as 11471769 + 1012257856 = 3387^2 + 31816^2 .

It is not a de Polignac number, because 1023729625 - 2¹¹ = 1023727577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094794 + ... + 4095043.

It is an arithmetic number, because the mean of its divisors is an integer number (159701841).

Almost surely, 2^1023729625 is an apocalyptic number.

It is an amenable number.

1023729625 is a deficient number, since it is larger than the sum of its proper divisors (253885103).

1023729625 is an frugal number, since it uses more digits than its factorization.

1023729625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189852 (or 8189842 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1023729625 is about 31995.7751117237. The cubic root of 1023729625 is about 1007.8481208691.

The spelling of 1023729625 in words is "one billion, twenty-three million, seven hundred twenty-nine thousand, six hundred twenty-five".