1672704725 has 6 divisors (see below), whose sum is σ = 2074153890. Its totient is φ = 1338163760.

The previous prime is 1672704721. The next prime is 1672704779. The reversal of 1672704725 is 5274072761.

It can be written as a sum of positive squares in 3 ways, for example, as 13853284 + 1658851441 = 3722^2 + 40729^2 .

It is not a de Polignac number, because 1672704725 - 2² = 1672704721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672704721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33454070 + ... + 33454119.

It is an arithmetic number, because the mean of its divisors is an integer number (345692315).

Almost surely, 2^1672704725 is an apocalyptic number.

It is an amenable number.

1672704725 is a deficient number, since it is larger than the sum of its proper divisors (401449165).

1672704725 is an equidigital number, since it uses as much as digits as its factorization.

1672704725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66908199 (or 66908194 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 1672704725 is about 40898.7129993109. The cubic root of 1672704725 is about 1187.0611578823.

The spelling of 1672704725 in words is "one billion, six hundred seventy-two million, seven hundred four thousand, seven hundred twenty-five".