40025143 has 8 divisors (see below), whose sum is σ = 41121360. Its totient is φ = 38934720.

The previous prime is 40025119. The next prime is 40025147. The reversal of 40025143 is 34152004.

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 40025143 - 2⁹ = 40024631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40025143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15048 + ... + 17506.

It is an arithmetic number, because the mean of its divisors is an integer number (5140170).

Almost surely, 2^40025143 is an apocalyptic number.

40025143 is a deficient number, since it is larger than the sum of its proper divisors (1096217).

40025143 is a wasteful number, since it uses less digits than its factorization.

40025143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40025143 is about 6326.5427367560. The cubic root of 40025143 is about 342.0668308688.

Adding to 40025143 its reverse (34152004), we get a palindrome (74177147).

The spelling of 40025143 in words is "forty million, twenty-five thousand, one hundred forty-three".