8257429664425 has 24 divisors (see below), whose sum is σ = 10269672761376. Its totient is φ = 6586295677440.

The previous prime is 8257429664401. The next prime is 8257429664441. The reversal of 8257429664425 is 5244669247528.

It is a happy number.

It is not a de Polignac number, because 8257429664425 - 2⁹ = 8257429663913 is a prime.

It is a super-2 number, since 2×8257429664425² (a number of 27 digits) contains 22 as substring.

It is a Duffinian 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, 109067634 + ... + 109143316.

It is an arithmetic number, because the mean of its divisors is an integer number (427903031724).

Almost surely, 2^{8257429664425} is an apocalyptic number.

It is an amenable number.

8257429664425 is a deficient number, since it is larger than the sum of its proper divisors (2012243096951).

8257429664425 is a wasteful number, since it uses less digits than its factorization.

8257429664425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88617 (or 88612 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 64.

The spelling of 8257429664425 in words is "eight trillion, two hundred fifty-seven billion, four hundred twenty-nine million, six hundred sixty-four thousand, four hundred twenty-five".