1712925521 has 4 divisors (see below), whose sum is σ = 1713332532. Its totient is φ = 1712518512.

The previous prime is 1712925499. The next prime is 1712925523. The reversal of 1712925521 is 1255292171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95277121 + 1617648400 = 9761^2 + 40220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1712925521 - 2¹⁰ = 1712924497 is a prime.

It is a super-2 number, since 2×1712925521² = 5868227680986242882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1712925523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197126 + ... + 205631.

It is an arithmetic number, because the mean of its divisors is an integer number (428333133).

Almost surely, 2^1712925521 is an apocalyptic number.

It is an amenable number.

1712925521 is a deficient number, since it is larger than the sum of its proper divisors (407011).

1712925521 is an equidigital number, since it uses as much as digits as its factorization.

1712925521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407010.

The product of its digits is 12600, while the sum is 35.

The square root of 1712925521 is about 41387.5044065235. The cubic root of 1712925521 is about 1196.5003408452.

The spelling of 1712925521 in words is "one billion, seven hundred twelve million, nine hundred twenty-five thousand, five hundred twenty-one".