40135444525 has 24 divisors (see below), whose sum is σ = 54772815744. Its totient is φ = 28931078400.

The previous prime is 40135444499. The next prime is 40135444541. The reversal of 40135444525 is 52544453104.

It is not a de Polignac number, because 40135444525 - 2¹⁷ = 40135313453 is a prime.

It is a super-2 number, since 2×40135444525² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 614709 + ... + 676858.

It is an arithmetic number, because the mean of its divisors is an integer number (2282200656).

Almost surely, 2^40135444525 is an apocalyptic number.

It is an amenable number.

40135444525 is a deficient number, since it is larger than the sum of its proper divisors (14637371219).

40135444525 is a wasteful number, since it uses less digits than its factorization.

40135444525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291701 (or 1291696 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 40135444525 its reverse (52544453104), we get a palindrome (92679897629).

The spelling of 40135444525 in words is "forty billion, one hundred thirty-five million, four hundred forty-four thousand, five hundred twenty-five".