40640444550525 has 48 divisors (see below), whose sum is σ = 73439673988608. Its totient is φ = 19741847808000.

The previous prime is 40640444550493. The next prime is 40640444550527. The reversal of 40640444550525 is 52505544404604.

It is not a de Polignac number, because 40640444550525 - 2⁵ = 40640444550493 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40640444550527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 514071096 + ... + 514150145.

It is an arithmetic number, because the mean of its divisors is an integer number (1529993208096).

Almost surely, 2^{40640444550525} is an apocalyptic number.

It is an amenable number.

40640444550525 is a deficient number, since it is larger than the sum of its proper divisors (32799229438083).

40640444550525 is a wasteful number, since it uses less digits than its factorization.

40640444550525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028221302 (or 1028221297 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 48.

The spelling of 40640444550525 in words is "forty trillion, six hundred forty billion, four hundred forty-four million, five hundred fifty thousand, five hundred twenty-five".