4005257725 has 24 divisors (see below), whose sum is σ = 5678569088. Its totient is φ = 2745230400.

The previous prime is 4005257719. The next prime is 4005257761. The reversal of 4005257725 is 5277525004.

It is not a de Polignac number, because 4005257725 - 2¹⁵ = 4005224957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 568927 + ... + 575923.

Almost surely, 2^4005257725 is an apocalyptic number.

It is an amenable number.

4005257725 is a deficient number, since it is larger than the sum of its proper divisors (1673311363).

4005257725 is a wasteful number, since it uses less digits than its factorization.

4005257725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285 (or 10280 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 4005257725 is about 63287.1055192130. The cubic root of 4005257725 is about 1588.0962573069.

The spelling of 4005257725 in words is "four billion, five million, two hundred fifty-seven thousand, seven hundred twenty-five".