4198392025 has 9 divisors (see below), whose sum is σ = 5206407871. Its totient is φ = 3358454440.

The previous prime is 4198391999. The next prime is 4198392043. The reversal of 4198392025 is 5202938914.

The square root of 4198392025 is 64795.

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., 1511421129 + 2686970896 = 38877^2 + 51836^2 .

It is not a de Polignac number, because 4198392025 - 2¹¹ = 4198389977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 317496 + ... + 330454.

Almost surely, 2^4198392025 is an apocalyptic number.

4198392025 is the 64795-th square number.

4198392025 is the 32398-th centered octagonal number.

It is an amenable number.

4198392025 is a deficient number, since it is larger than the sum of its proper divisors (1008015846).

4198392025 is an frugal number, since it uses more digits than its factorization.

4198392025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25928 (or 12964 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The cubic root of 4198392025 is about 1613.2227187165. Note that the first 3 decimals are identical.

The spelling of 4198392025 in words is "four billion, one hundred ninety-eight million, three hundred ninety-two thousand, twenty-five".