1725397871 has 8 divisors (see below), whose sum is σ = 1790998464. Its totient is φ = 1661001120.

The previous prime is 1725397811. The next prime is 1725397873. The reversal of 1725397871 is 1787935271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1725397871 - 2²⁶ = 1658289007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725397873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298040 + ... + 303773.

It is an arithmetic number, because the mean of its divisors is an integer number (223874808).

Almost surely, 2^1725397871 is an apocalyptic number.

1725397871 is a deficient number, since it is larger than the sum of its proper divisors (65600593).

1725397871 is an equidigital number, since it uses as much as digits as its factorization.

1725397871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601921.

The product of its digits is 740880, while the sum is 50.

The square root of 1725397871 is about 41537.9088424056. The cubic root of 1725397871 is about 1199.3973527216.

The spelling of 1725397871 in words is "one billion, seven hundred twenty-five million, three hundred ninety-seven thousand, eight hundred seventy-one".