40720255 has 8 divisors (see below), whose sum is σ = 49594032. Its totient is φ = 32089728.

The previous prime is 40720247. The next prime is 40720279. The reversal of 40720255 is 55202704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40720255 - 2³ = 40720247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60442 + ... + 61111.

It is an arithmetic number, because the mean of its divisors is an integer number (6199254).

Almost surely, 2^40720255 is an apocalyptic number.

40720255 is a deficient number, since it is larger than the sum of its proper divisors (8873777).

40720255 is a wasteful number, since it uses less digits than its factorization.

40720255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121625.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 40720255 is about 6381.2424338839. The cubic root of 40720255 is about 344.0356884508.

Adding to 40720255 its reverse (55202704), we get a palindrome (95922959).

The spelling of 40720255 in words is "forty million, seven hundred twenty thousand, two hundred fifty-five".