25001382709 has 2 divisors, whose sum is σ = 25001382710. Its totient is φ = 25001382708.

The previous prime is 25001382677. The next prime is 25001382733. The reversal of 25001382709 is 90728310052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14858878609 + 10142504100 = 121897^2 + 100710^2 .

It is a cyclic number.

It is not a de Polignac number, because 25001382709 - 2⁵ = 25001382677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25001382799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500691354 + 12500691355.

It is an arithmetic number, because the mean of its divisors is an integer number (12500691355).

Almost surely, 2^25001382709 is an apocalyptic number.

It is an amenable number.

25001382709 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001382709 is an equidigital number, since it uses as much as digits as its factorization.

25001382709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 25001382709 in words is "twenty-five billion, one million, three hundred eighty-two thousand, seven hundred nine".