64113706425 has 24 divisors (see below), whose sum is σ = 106081373056. Its totient is φ = 34168155840.

The previous prime is 64113706421. The next prime is 64113706441. The reversal of 64113706425 is 52460731146.

It is a happy number.

It is not a de Polignac number, because 64113706425 - 2² = 64113706421 is a prime.

It is a super-2 number, since 2×64113706425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64113706421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222574 + ... + 421623.

Almost surely, 2^64113706425 is an apocalyptic number.

It is an amenable number.

64113706425 is a deficient number, since it is larger than the sum of its proper divisors (41967666631).

64113706425 is a wasteful number, since it uses less digits than its factorization.

64113706425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645537 (or 645532 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 64113706425 in words is "sixty-four billion, one hundred thirteen million, seven hundred six thousand, four hundred twenty-five".