40025243 has 4 divisors (see below), whose sum is σ = 40573608. Its totient is φ = 39476880.

The previous prime is 40025239. The next prime is 40025261. The reversal of 40025243 is 34252004.

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 40025243 - 2² = 40025239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40025203) 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, 274073 + ... + 274218.

It is an arithmetic number, because the mean of its divisors is an integer number (10143402).

Almost surely, 2^40025243 is an apocalyptic number.

40025243 is a deficient number, since it is larger than the sum of its proper divisors (548365).

40025243 is an equidigital number, since it uses as much as digits as its factorization.

40025243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548364.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40025243 is about 6326.5506399617. The cubic root of 40025243 is about 342.0671157452.

Adding to 40025243 its reverse (34252004), we get a palindrome (74277247).

The spelling of 40025243 in words is "forty million, twenty-five thousand, two hundred forty-three".