17957340025 has 9 divisors (see below), whose sum is σ = 22267932493. Its totient is φ = 14365336000.

The previous prime is 17957340013. The next prime is 17957340029. The reversal of 17957340025 is 52004375971.

The square root of 17957340025 is 134005.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1798862569 + 16158477456 = 42413^2 + 127116^2 .

It is a de Polignac number, because none of the positive numbers 2^k-17957340025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17957340029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 656625 + ... + 683425.

Almost surely, 2^17957340025 is an apocalyptic number.

17957340025 is the 134005-th square number.

17957340025 is the 67003-rd centered octagonal number.

It is an amenable number.

17957340025 is a deficient number, since it is larger than the sum of its proper divisors (4310592468).

17957340025 is an frugal number, since it uses more digits than its factorization.

17957340025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53612 (or 26806 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 17957340025 in words is "seventeen billion, nine hundred fifty-seven million, three hundred forty thousand, twenty-five".