40025239 has 2 divisors, whose sum is σ = 40025240. Its totient is φ = 40025238.

The previous prime is 40025203. The next prime is 40025261. The reversal of 40025239 is 93252004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40025239 - 2²¹ = 37928087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40025299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012619 + 20012620.

It is an arithmetic number, because the mean of its divisors is an integer number (20012620).

Almost surely, 2^40025239 is an apocalyptic number.

40025239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40025239 is an equidigital number, since it uses as much as digits as its factorization.

40025239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40025239 is about 6326.5503238337. The cubic root of 40025239 is about 342.0671043501.

The spelling of 40025239 in words is "forty million, twenty-five thousand, two hundred thirty-nine".