1722738525 has 24 divisors (see below), whose sum is σ = 2972101440. Its totient is φ = 878845440.

The previous prime is 1722738509. The next prime is 1722738587. The reversal of 1722738525 is 5258372271.

It is not a de Polignac number, because 1722738525 - 2⁴ = 1722738509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497620 + ... + 501069.

It is an arithmetic number, because the mean of its divisors is an integer number (123837560).

Almost surely, 2^1722738525 is an apocalyptic number.

1722738525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1722738525 is a deficient number, since it is larger than the sum of its proper divisors (1249362915).

1722738525 is a wasteful number, since it uses less digits than its factorization.

1722738525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998725 (or 998720 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 1722738525 is about 41505.8854260453. The cubic root of 1722738525 is about 1198.7808277409.

The spelling of 1722738525 in words is "one billion, seven hundred twenty-two million, seven hundred thirty-eight thousand, five hundred twenty-five".