25426139 has 2 divisors, whose sum is σ = 25426140. Its totient is φ = 25426138.

The previous prime is 25426129. The next prime is 25426153. The reversal of 25426139 is 93162452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25426139 - 2¹⁶ = 25360603 is a prime.

It is not a weakly prime, because it can be changed into another prime (25426129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12713069 + 12713070.

It is an arithmetic number, because the mean of its divisors is an integer number (12713070).

Almost surely, 2^25426139 is an apocalyptic number.

25426139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25426139 is an equidigital number, since it uses as much as digits as its factorization.

25426139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 25426139 is about 5042.4338369482. The cubic root of 25426139 is about 294.0538064631.

The spelling of 25426139 in words is "twenty-five million, four hundred twenty-six thousand, one hundred thirty-nine".