64425143 has 12 divisors (see below), whose sum is σ = 68442840. Its totient is φ = 60632496.

The previous prime is 64425131. The next prime is 64425149. The reversal of 64425143 is 34152446.

It is not a de Polignac number, because 64425143 - 2¹⁴ = 64408759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64425149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64121 + ... + 65117.

It is an arithmetic number, because the mean of its divisors is an integer number (5703570).

Almost surely, 2^64425143 is an apocalyptic number.

64425143 is a deficient number, since it is larger than the sum of its proper divisors (4017697).

64425143 is a wasteful number, since it uses less digits than its factorization.

64425143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1195 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 64425143 is about 8026.5274558803. The cubic root of 64425143 is about 400.8837605635.

Adding to 64425143 its reverse (34152446), we get a palindrome (98577589).

The spelling of 64425143 in words is "sixty-four million, four hundred twenty-five thousand, one hundred forty-three".