40125799 has 4 divisors (see below), whose sum is σ = 45858064. Its totient is φ = 34393536.

The previous prime is 40125791. The next prime is 40125803. The reversal of 40125799 is 99752104.

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

It is a cyclic number.

It is not a de Polignac number, because 40125799 - 2³ = 40125791 is a prime.

It is a super-2 number, since 2×40125799² = 3220159490776802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2866122 + ... + 2866135.

It is an arithmetic number, because the mean of its divisors is an integer number (11464516).

Almost surely, 2^40125799 is an apocalyptic number.

40125799 is a deficient number, since it is larger than the sum of its proper divisors (5732265).

40125799 is an equidigital number, since it uses as much as digits as its factorization.

40125799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732264.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 40125799 is about 6334.4927973753. The cubic root of 40125799 is about 342.3533362498.

The spelling of 40125799 in words is "forty million, one hundred twenty-five thousand, seven hundred ninety-nine".