40553601525 has 18 divisors (see below), whose sum is σ = 72636006690. Its totient is φ = 21628587360.

The previous prime is 40553601523. The next prime is 40553601533. The reversal of 40553601525 is 52510635504.

40553601525 is a `hidden beast` number, since 40 + 5 + 5 + 3 + 601 + 5 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7700589009 + 32853012516 = 87753^2 + 181254^2 .

It is not a de Polignac number, because 40553601525 - 2¹ = 40553601523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40553601525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40553601523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90118890 + ... + 90119339.

It is an arithmetic number, because the mean of its divisors is an integer number (4035333705).

Almost surely, 2^40553601525 is an apocalyptic number.

40553601525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40553601525 is a deficient number, since it is larger than the sum of its proper divisors (32082405165).

40553601525 is a wasteful number, since it uses less digits than its factorization.

40553601525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180238245 (or 180238237 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 40553601525 in words is "forty billion, five hundred fifty-three million, six hundred one thousand, five hundred twenty-five".