25138079 has 2 divisors, whose sum is σ = 25138080. Its totient is φ = 25138078.

The previous prime is 25138073. The next prime is 25138129. The reversal of 25138079 is 97083152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25138079 - 2⁴ = 25138063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25138073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12569039 + 12569040.

It is an arithmetic number, because the mean of its divisors is an integer number (12569040).

Almost surely, 2^25138079 is an apocalyptic number.

25138079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25138079 is an equidigital number, since it uses as much as digits as its factorization.

25138079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 25138079 is about 5013.7888866605. The cubic root of 25138079 is about 292.9391130224.

The spelling of 25138079 in words is "twenty-five million, one hundred thirty-eight thousand, seventy-nine".