1573662725 has 24 divisors (see below), whose sum is σ = 2009220360. Its totient is φ = 1221765120.

The previous prime is 1573662721. The next prime is 1573662733. The reversal of 1573662725 is 5272663751.

It can be written as a sum of positive squares in 12 ways, for example, as 697857889 + 875804836 = 26417^2 + 29594^2 .

It is not a de Polignac number, because 1573662725 - 2² = 1573662721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1573662721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398561 + ... + 402489.

It is an arithmetic number, because the mean of its divisors is an integer number (83717515).

Almost surely, 2^1573662725 is an apocalyptic number.

It is an amenable number.

1573662725 is a deficient number, since it is larger than the sum of its proper divisors (435557635).

1573662725 is a wasteful number, since it uses less digits than its factorization.

1573662725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409 (or 4404 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 1573662725 is about 39669.4180068223. The cubic root of 1573662725 is about 1163.1540020630.

The spelling of 1573662725 in words is "one billion, five hundred seventy-three million, six hundred sixty-two thousand, seven hundred twenty-five".