40512505 has 16 divisors (see below), whose sum is σ = 54747648. Its totient is φ = 28512000.

The previous prime is 40512497. The next prime is 40512517. The reversal of 40512505 is 50521504.

It is not a de Polignac number, because 40512505 - 2³ = 40512497 is a prime.

It is a super-2 number, since 2×40512505² = 3282526122750050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10176 + ... + 13585.

It is an arithmetic number, because the mean of its divisors is an integer number (3421728).

Almost surely, 2^40512505 is an apocalyptic number.

It is an amenable number.

40512505 is a deficient number, since it is larger than the sum of its proper divisors (14235143).

40512505 is a wasteful number, since it uses less digits than its factorization.

40512505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23808.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 40512505 is about 6364.9434404400. The cubic root of 40512505 is about 343.4496139476.

It can be divided in two parts, 4051 and 2505, that added together give a palindrome (6556).

The spelling of 40512505 in words is "forty million, five hundred twelve thousand, five hundred five".