64545143425 has 36 divisors (see below), whose sum is σ = 93674550576. Its totient is φ = 43987860000.

The previous prime is 64545143419. The next prime is 64545143441. The reversal of 64545143425 is 52434154546.

It is not a de Polignac number, because 64545143425 - 2⁵ = 64545143393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38050 + ... + 361300.

Almost surely, 2^64545143425 is an apocalyptic number.

It is an amenable number.

64545143425 is a deficient number, since it is larger than the sum of its proper divisors (29129407151).

64545143425 is a wasteful number, since it uses less digits than its factorization.

64545143425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323438 (or 323426 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 43.

The spelling of 64545143425 in words is "sixty-four billion, five hundred forty-five million, one hundred forty-three thousand, four hundred twenty-five".