7000001257 has 8 divisors (see below), whose sum is σ = 7100974080. Its totient is φ = 6899094720.

The previous prime is 7000001233. The next prime is 7000001287. The reversal of 7000001257 is 7521000007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7000001257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7000001227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220344 + ... + 250102.

It is an arithmetic number, because the mean of its divisors is an integer number (887621760).

Almost surely, 2^7000001257 is an apocalyptic number.

It is an amenable number.

7000001257 is a deficient number, since it is larger than the sum of its proper divisors (100972823).

7000001257 is a wasteful number, since it uses less digits than its factorization.

7000001257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33143.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 7000001257 is about 83666.0101654190. The cubic root of 7000001257 is about 1912.9312972750.

The spelling of 7000001257 in words is "seven billion, one thousand, two hundred fifty-seven".