40025139 has 32 divisors (see below), whose sum is σ = 67006464. Its totient is φ = 20645280.

The previous prime is 40025119. The next prime is 40025147. The reversal of 40025139 is 93152004.

40025139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40025139 - 2⁸ = 40024883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40025119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37122 + ... + 38184.

It is an arithmetic number, because the mean of its divisors is an integer number (2093952).

Almost surely, 2^40025139 is an apocalyptic number.

40025139 is a deficient number, since it is larger than the sum of its proper divisors (26981325).

40025139 is a wasteful number, since it uses less digits than its factorization.

40025139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 40025139 is about 6326.5424206276. The cubic root of 40025139 is about 342.0668194737.

The spelling of 40025139 in words is "forty million, twenty-five thousand, one hundred thirty-nine".