1672361725 has 6 divisors (see below), whose sum is σ = 2073728570. Its totient is φ = 1337889360.

The previous prime is 1672361701. The next prime is 1672361729. The reversal of 1672361725 is 5271632761.

It can be written as a sum of positive squares in 3 ways, for example, as 470976804 + 1201384921 = 21702^2 + 34661^2 .

It is not a de Polignac number, because 1672361725 - 2⁷ = 1672361597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672361729) 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, 33447210 + ... + 33447259.

Almost surely, 2^1672361725 is an apocalyptic number.

It is an amenable number.

1672361725 is a deficient number, since it is larger than the sum of its proper divisors (401366845).

1672361725 is an equidigital number, since it uses as much as digits as its factorization.

1672361725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66894479 (or 66894474 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 1672361725 is about 40894.5194983386. The cubic root of 1672361725 is about 1186.9800138914.

The spelling of 1672361725 in words is "one billion, six hundred seventy-two million, three hundred sixty-one thousand, seven hundred twenty-five".