3945398025 has 12 divisors (see below), whose sum is σ = 6523058192. Its totient is φ = 2104212240.

The previous prime is 3945398011. The next prime is 3945398071. The reversal of 3945398025 is 5208935493.

It is a de Polignac number, because none of the positive numbers 2^k-3945398025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26302579 + ... + 26302728.

Almost surely, 2^3945398025 is an apocalyptic number.

It is an amenable number.

3945398025 is a deficient number, since it is larger than the sum of its proper divisors (2577660167).

3945398025 is a wasteful number, since it uses less digits than its factorization.

3945398025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52605320 (or 52605315 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The square root of 3945398025 is about 62812.4034327616. The cubic root of 3945398025 is about 1580.1449988437.

The spelling of 3945398025 in words is "three billion, nine hundred forty-five million, three hundred ninety-eight thousand, twenty-five".