7425171257 has 8 divisors (see below), whose sum is σ = 8516111232. Its totient is φ = 6341781600.

The previous prime is 7425171203. The next prime is 7425171301. The reversal of 7425171257 is 7521715247.

7425171257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7425171257 - 2⁸ = 7425171001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7425141257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1885469 + ... + 1889402.

It is an arithmetic number, because the mean of its divisors is an integer number (1064513904).

Almost surely, 2^7425171257 is an apocalyptic number.

It is an amenable number.

7425171257 is a deficient number, since it is larger than the sum of its proper divisors (1090939975).

7425171257 is a wasteful number, since it uses less digits than its factorization.

7425171257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775159.

The product of its digits is 137200, while the sum is 41.

The square root of 7425171257 is about 86169.4334262446. The cubic root of 7425171257 is about 1950.9021691779.

The spelling of 7425171257 in words is "seven billion, four hundred twenty-five million, one hundred seventy-one thousand, two hundred fifty-seven".