40665510525 has 48 divisors (see below), whose sum is σ = 70302357504. Its totient is φ = 20702278080.

The previous prime is 40665510503. The next prime is 40665510533. The reversal of 40665510525 is 52501556604.

It is a happy number.

It is not a de Polignac number, because 40665510525 - 2¹⁷ = 40665379453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 815872 + ... + 864278.

It is an arithmetic number, because the mean of its divisors is an integer number (1464632448).

Almost surely, 2^40665510525 is an apocalyptic number.

It is an amenable number.

40665510525 is a deficient number, since it is larger than the sum of its proper divisors (29636846979).

40665510525 is a wasteful number, since it uses less digits than its factorization.

40665510525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48930 (or 48925 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 40665510525 in words is "forty billion, six hundred sixty-five million, five hundred ten thousand, five hundred twenty-five".