64432525 has 12 divisors (see below), whose sum is σ = 81846324. Its totient is φ = 50288000.

The previous prime is 64432523. The next prime is 64432547. The reversal of 64432525 is 52523446.

It can be written as a sum of positive squares in 6 ways, for example, as 736164 + 63696361 = 858^2 + 7981^2 .

It is not a de Polignac number, because 64432525 - 2¹ = 64432523 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 (64432523) 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, 30406 + ... + 32455.

It is an arithmetic number, because the mean of its divisors is an integer number (6820527).

Almost surely, 2^64432525 is an apocalyptic number.

It is an amenable number.

64432525 is a deficient number, since it is larger than the sum of its proper divisors (17413799).

64432525 is a wasteful number, since it uses less digits than its factorization.

64432525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62912 (or 62907 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 64432525 is about 8026.9872928765. The cubic root of 64432525 is about 400.8990714124.

The spelling of 64432525 in words is "sixty-four million, four hundred thirty-two thousand, five hundred twenty-five".