25512214021139 has 2 divisors, whose sum is σ = 25512214021140. Its totient is φ = 25512214021138.

The previous prime is 25512214021111. The next prime is 25512214021169. The reversal of 25512214021139 is 93112041221552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25512214021139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25512214021109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756107010569 + 12756107010570.

It is an arithmetic number, because the mean of its divisors is an integer number (12756107010570).

Almost surely, 2^{25512214021139} is an apocalyptic number.

25512214021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25512214021139 is an equidigital number, since it uses as much as digits as its factorization.

25512214021139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 25512214021139 in words is "twenty-five trillion, five hundred twelve billion, two hundred fourteen million, twenty-one thousand, one hundred thirty-nine".