2153709025 has 12 divisors (see below), whose sum is σ = 2876030332. Its totient is φ = 1590431040.

The previous prime is 2153709017. The next prime is 2153709083. The reversal of 2153709025 is 5209073512.

It can be written as a sum of positive squares in 6 ways, for example, as 170877184 + 1982831841 = 13072^2 + 44529^2 .

It is not a de Polignac number, because 2153709025 - 2³ = 2153709017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3313074 + ... + 3313723.

Almost surely, 2^2153709025 is an apocalyptic number.

2153709025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2153709025 is a deficient number, since it is larger than the sum of its proper divisors (722321307).

2153709025 is a wasteful number, since it uses less digits than its factorization.

2153709025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626820 (or 6626815 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2153709025 is about 46408.0706881896. The cubic root of 2153709025 is about 1291.4046404785.

The spelling of 2153709025 in words is "two billion, one hundred fifty-three million, seven hundred nine thousand, twenty-five".