640150125 has 16 divisors (see below), whose sum is σ = 1065210432. Its totient is φ = 341413200.

The previous prime is 640150123. The next prime is 640150127. The reversal of 640150125 is 521051046.

It is an interprime number because it is at equal distance from previous prime (640150123) and next prime (640150127).

It is not a de Polignac number, because 640150125 - 2¹ = 640150123 is a prime.

It is a super-3 number, since 3×640150125³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 640150095 and 640150104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640150123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853159 + ... + 853908.

It is an arithmetic number, because the mean of its divisors is an integer number (66575652).

Almost surely, 2^640150125 is an apocalyptic number.

It is an amenable number.

640150125 is a deficient number, since it is larger than the sum of its proper divisors (425060307).

640150125 is a wasteful number, since it uses less digits than its factorization.

640150125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707085 (or 1707075 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 640150125 is about 25301.1882132045. The cubic root of 640150125 is about 861.8412529340.

The spelling of 640150125 in words is "six hundred forty million, one hundred fifty thousand, one hundred twenty-five".