424203660402025 has 27 divisors (see below), whose sum is σ = 611893176901911. Its totient is φ = 290882015681040.

The previous prime is 424203660402023. The next prime is 424203660402107. The reversal of 424203660402025 is 520204066302424.

The square root of 424203660402025 is 20596205.

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

It can be written as a sum of positive squares in only one way, i.e., 152713317744729 + 271490342657296 = 12357723^2 + 16476964^2 .

It is not a de Polignac number, because 424203660402025 - 2¹ = 424203660402023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424203660402023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 720572944 + ... + 721161406.

Almost surely, 2^{424203660402025} is an apocalyptic number.

424203660402025 is the 20596205-th square number.

424203660402025 is the 10298103-rd centered octagonal number.

It is an amenable number.

424203660402025 is a deficient number, since it is larger than the sum of its proper divisors (187689516499886).

424203660402025 is an frugal number, since it uses more digits than its factorization.

424203660402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176950 (or 588475 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

The spelling of 424203660402025 in words is "four hundred twenty-four trillion, two hundred three billion, six hundred sixty million, four hundred two thousand, twenty-five".