25693750039 has 2 divisors, whose sum is σ = 25693750040. Its totient is φ = 25693750038.

The previous prime is 25693750009. The next prime is 25693750091. The reversal of 25693750039 is 93005739652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25693750039 - 2²¹ = 25691652887 is a prime.

It is a super-2 number, since 2×25693750039² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25693749974 and 25693750001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25693750009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12846875019 + 12846875020.

It is an arithmetic number, because the mean of its divisors is an integer number (12846875020).

Almost surely, 2^25693750039 is an apocalyptic number.

25693750039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25693750039 is an equidigital number, since it uses as much as digits as its factorization.

25693750039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 49.

The spelling of 25693750039 in words is "twenty-five billion, six hundred ninety-three million, seven hundred fifty thousand, thirty-nine".