40020155525 has 48 divisors (see below), whose sum is σ = 61312920960. Its totient is φ = 25295328000.

The previous prime is 40020155501. The next prime is 40020155551. The reversal of 40020155525 is 52555102004.

It is not a de Polignac number, because 40020155525 - 2²⁰ = 40019106949 is a prime.

It is a super-2 number, since 2×40020155525² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39626 + ... + 285675.

It is an arithmetic number, because the mean of its divisors is an integer number (1277352520).

Almost surely, 2^40020155525 is an apocalyptic number.

It is an amenable number.

40020155525 is a deficient number, since it is larger than the sum of its proper divisors (21292765435).

40020155525 is a wasteful number, since it uses less digits than its factorization.

40020155525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325374 (or 325369 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

Adding to 40020155525 its reverse (52555102004), we get a palindrome (92575257529).

The spelling of 40020155525 in words is "forty billion, twenty million, one hundred fifty-five thousand, five hundred twenty-five".