1722137125 has 8 divisors (see below), whose sum is σ = 2149227288. Its totient is φ = 1377709600.

The previous prime is 1722137119. The next prime is 1722137129. The reversal of 1722137125 is 5217312271.

It can be written as a sum of positive squares in 4 ways, for example, as 216619524 + 1505517601 = 14718^2 + 38801^2 .

It is not a de Polignac number, because 1722137125 - 2²⁹ = 1185266213 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722137129) 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, 6888424 + ... + 6888673.

It is an arithmetic number, because the mean of its divisors is an integer number (268653411).

Almost surely, 2^1722137125 is an apocalyptic number.

It is an amenable number.

1722137125 is a deficient number, since it is larger than the sum of its proper divisors (427090163).

1722137125 is an equidigital number, since it uses as much as digits as its factorization.

1722137125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13777112 (or 13777102 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 1722137125 is about 41498.6400379579. The cubic root of 1722137125 is about 1198.6413152363.

Adding to 1722137125 its reverse (5217312271), we get a palindrome (6939449396).

The spelling of 1722137125 in words is "one billion, seven hundred twenty-two million, one hundred thirty-seven thousand, one hundred twenty-five".