652640425 has 12 divisors (see below), whose sum is σ = 809596620. Its totient is φ = 521904320.

The previous prime is 652640423. The next prime is 652640431. The reversal of 652640425 is 524046256.

It can be written as a sum of positive squares in 6 ways, for example, as 10575504 + 642064921 = 3252^2 + 25339^2 .

It is not a de Polignac number, because 652640425 - 2¹ = 652640423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (652640423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102639 + ... + 108811.

It is an arithmetic number, because the mean of its divisors is an integer number (67466385).

Almost surely, 2^652640425 is an apocalyptic number.

It is an amenable number.

652640425 is a deficient number, since it is larger than the sum of its proper divisors (156956195).

652640425 is a wasteful number, since it uses less digits than its factorization.

652640425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10412 (or 10407 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 652640425 is about 25546.8280809967. The cubic root of 652640425 is about 867.4104639519.

The spelling of 652640425 in words is "six hundred fifty-two million, six hundred forty thousand, four hundred twenty-five".