1640528880425 has 12 divisors (see below), whose sum is σ = 2042767349760. Its totient is φ = 1306931789520.

The previous prime is 1640528880413. The next prime is 1640528880449. The reversal of 1640528880425 is 5240888250461.

It is a happy number.

It is not a de Polignac number, because 1640528880425 - 2¹⁰ = 1640528879401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137276777 + ... + 137288726.

It is an arithmetic number, because the mean of its divisors is an integer number (170230612480).

Almost surely, 2^{1640528880425} is an apocalyptic number.

It is an amenable number.

1640528880425 is a deficient number, since it is larger than the sum of its proper divisors (402238469335).

1640528880425 is a wasteful number, since it uses less digits than its factorization.

1640528880425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274565752 (or 274565747 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 53.

The spelling of 1640528880425 in words is "one trillion, six hundred forty billion, five hundred twenty-eight million, eight hundred eighty thousand, four hundred twenty-five".