670730503131725 has 36 divisors (see below), whose sum is σ = 861395520296220. Its totient is φ = 518068719168000.

The previous prime is 670730503131721. The next prime is 670730503131757. The reversal of 670730503131725 is 527131305037076.

It can be written as a sum of positive squares in 18 ways, for example, as 190537523282089 + 480192979849636 = 13803533^2 + 21913306^2 .

It is not a de Polignac number, because 670730503131725 - 2² = 670730503131721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670730503131721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 901621721 + ... + 902365329.

Almost surely, 2^{670730503131725} is an apocalyptic number.

It is an amenable number.

670730503131725 is a deficient number, since it is larger than the sum of its proper divisors (190665017164495).

670730503131725 is a wasteful number, since it uses less digits than its factorization.

670730503131725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786578 (or 786544 counting only the distinct ones).

The product of its (nonzero) digits is 2778300, while the sum is 50.

The spelling of 670730503131725 in words is "six hundred seventy trillion, seven hundred thirty billion, five hundred three million, one hundred thirty-one thousand, seven hundred twenty-five".