252640025039 has 2 divisors, whose sum is σ = 252640025040. Its totient is φ = 252640025038.

The previous prime is 252640025021. The next prime is 252640025041. The reversal of 252640025039 is 930520046252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252640025039 - 2⁸ = 252640024783 is a prime.

Together with 252640025041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 252640024993 and 252640025011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252640025059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126320012519 + 126320012520.

It is an arithmetic number, because the mean of its divisors is an integer number (126320012520).

Almost surely, 2^252640025039 is an apocalyptic number.

252640025039 is a deficient number, since it is larger than the sum of its proper divisors (1).

252640025039 is an equidigital number, since it uses as much as digits as its factorization.

252640025039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 252640025039 in words is "two hundred fifty-two billion, six hundred forty million, twenty-five thousand, thirty-nine".