1500725669 has 4 divisors (see below), whose sum is σ = 1552474860. Its totient is φ = 1448976480.

The previous prime is 1500725579. The next prime is 1500725701. The reversal of 1500725669 is 9665270051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 798740644 + 701985025 = 28262^2 + 26495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1500725669 - 2²⁰ = 1499677093 is a prime.

It is a super-2 number, since 2×1500725669² = 4504355067190995122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500725869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25874552 + ... + 25874609.

It is an arithmetic number, because the mean of its divisors is an integer number (388118715).

Almost surely, 2^1500725669 is an apocalyptic number.

It is an amenable number.

1500725669 is a deficient number, since it is larger than the sum of its proper divisors (51749191).

1500725669 is an equidigital number, since it uses as much as digits as its factorization.

1500725669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51749190.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 1500725669 is about 38739.2006758012. The cubic root of 1500725669 is about 1144.8988091577.

The spelling of 1500725669 in words is "one billion, five hundred million, seven hundred twenty-five thousand, six hundred sixty-nine".