40718225 has 6 divisors (see below), whose sum is σ = 50490630. Its totient is φ = 32574560.

The previous prime is 40718219. The next prime is 40718231. The reversal of 40718225 is 52281704.

It is an interprime number because it is at equal distance from previous prime (40718219) and next prime (40718231).

It can be written as a sum of positive squares in 3 ways, for example, as 3214849 + 37503376 = 1793^2 + 6124^2 .

It is not a de Polignac number, because 40718225 - 2²⁰ = 39669649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 814340 + ... + 814389.

It is an arithmetic number, because the mean of its divisors is an integer number (8415105).

Almost surely, 2^40718225 is an apocalyptic number.

It is an amenable number.

40718225 is a deficient number, since it is larger than the sum of its proper divisors (9772405).

40718225 is a wasteful number, since it uses less digits than its factorization.

40718225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628739 (or 1628734 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 40718225 is about 6381.0833719675. The cubic root of 40718225 is about 344.0299713611.

Adding to 40718225 its reverse (52281704), we get a palindrome (92999929).

The spelling of 40718225 in words is "forty million, seven hundred eighteen thousand, two hundred twenty-five".