4066625257 has 4 divisors (see below), whose sum is σ = 4066776720. Its totient is φ = 4066473796.

The previous prime is 4066625219. The next prime is 4066625333. The reversal of 4066625257 is 7525266604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4066625257 - 2¹⁵ = 4066592489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4066625557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23407 + ... + 93172.

It is an arithmetic number, because the mean of its divisors is an integer number (1016694180).

Almost surely, 2^4066625257 is an apocalyptic number.

It is an amenable number.

4066625257 is a deficient number, since it is larger than the sum of its proper divisors (151463).

4066625257 is a wasteful number, since it uses less digits than its factorization.

4066625257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151462.

The product of its (nonzero) digits is 604800, while the sum is 43.

The square root of 4066625257 is about 63770.0968871775. The cubic root of 4066625257 is about 1596.1659837097.

The spelling of 4066625257 in words is "four billion, sixty-six million, six hundred twenty-five thousand, two hundred fifty-seven".