40425505 has 4 divisors (see below), whose sum is σ = 48510612. Its totient is φ = 32340400.

The previous prime is 40425433. The next prime is 40425527. The reversal of 40425505 is 50552404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10131489 + 30294016 = 3183^2 + 5504^2 .

It is not a de Polignac number, because 40425505 - 2¹¹ = 40423457 is a prime.

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 40425505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4042546 + ... + 4042555.

It is an arithmetic number, because the mean of its divisors is an integer number (12127653).

Almost surely, 2^40425505 is an apocalyptic number.

It is an amenable number.

40425505 is a deficient number, since it is larger than the sum of its proper divisors (8085107).

40425505 is an equidigital number, since it uses as much as digits as its factorization.

40425505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8085106.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 40425505 is about 6358.1054568165. The cubic root of 40425505 is about 343.2035867765.

Adding to 40425505 its reverse (50552404), we get a palindrome (90977909).

The spelling of 40425505 in words is "forty million, four hundred twenty-five thousand, five hundred five".