440016631136525 has 12 divisors (see below), whose sum is σ = 577715953351572. Its totient is φ = 331306639914240.

The previous prime is 440016631136519. The next prime is 440016631136539. The reversal of 440016631136525 is 525631136610044.

It can be written as a sum of positive squares in 6 ways, for example, as 57565649363209 + 382450981773316 = 7587203^2 + 19556354^2 .

It is not a de Polignac number, because 440016631136525 - 2²⁰ = 440016630087949 is a prime.

It is a super-2 number, since 2×440016631136525² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440016631136525.

It is a congruent number.

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, 517666624442 + ... + 517666625291.

It is an arithmetic number, because the mean of its divisors is an integer number (48142996112631).

Almost surely, 2^{440016631136525} is an apocalyptic number.

It is an amenable number.

440016631136525 is a deficient number, since it is larger than the sum of its proper divisors (137699322215047).

440016631136525 is a wasteful number, since it uses less digits than its factorization.

440016631136525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035333249760 (or 1035333249755 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

Adding to 440016631136525 its reverse (525631136610044), we get a palindrome (965647767746569).

The spelling of 440016631136525 in words is "four hundred forty trillion, sixteen billion, six hundred thirty-one million, one hundred thirty-six thousand, five hundred twenty-five".