640150196525 has 36 divisors (see below), whose sum is σ = 929499392160. Its totient is φ = 436052988000.

The previous prime is 640150196501. The next prime is 640150196551. The reversal of 640150196525 is 525691051046.

640150196525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 640150196525 - 2⁶ = 640150196461 is a prime.

It is a super-2 number, since 2×640150196525² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 1545395 + ... + 1915344.

It is an arithmetic number, because the mean of its divisors is an integer number (25819427560).

Almost surely, 2^640150196525 is an apocalyptic number.

It is an amenable number.

640150196525 is a deficient number, since it is larger than the sum of its proper divisors (289349195635).

640150196525 is a wasteful number, since it uses less digits than its factorization.

640150196525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460914 (or 3460902 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 640150196525 in words is "six hundred forty billion, one hundred fifty million, one hundred ninety-six thousand, five hundred twenty-five".