40232505 has 32 divisors (see below), whose sum is σ = 67108608. Its totient is φ = 20563200.

The previous prime is 40232503. The next prime is 40232509. The reversal of 40232505 is 50523204.

It is not a de Polignac number, because 40232505 - 2¹ = 40232503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40232503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38895 + ... + 39915.

It is an arithmetic number, because the mean of its divisors is an integer number (2097144).

Almost surely, 2^40232505 is an apocalyptic number.

It is an amenable number.

40232505 is a deficient number, since it is larger than the sum of its proper divisors (26876103).

40232505 is a wasteful number, since it uses less digits than its factorization.

40232505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40232505 is about 6342.9098212098. The cubic root of 40232505 is about 342.6565395213.

Adding to 40232505 its reverse (50523204), we get a palindrome (90755709).

The spelling of 40232505 in words is "forty million, two hundred thirty-two thousand, five hundred five".