25000139 has 2 divisors, whose sum is σ = 25000140. Its totient is φ = 25000138.

The previous prime is 25000133. The next prime is 25000141. The reversal of 25000139 is 93100052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25000139 - 2¹² = 24996043 is a prime.

Together with 25000141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25000139.

It is not a weakly prime, because it can be changed into another prime (25000133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500069 + 12500070.

It is an arithmetic number, because the mean of its divisors is an integer number (12500070).

Almost surely, 2^25000139 is an apocalyptic number.

25000139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25000139 is an equidigital number, since it uses as much as digits as its factorization.

25000139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 25000139 is about 5000.0138999807. The cubic root of 25000139 is about 292.4023157382.

The spelling of 25000139 in words is "twenty-five million, one hundred thirty-nine", and thus it is an aban number.