25227121939 has 2 divisors, whose sum is σ = 25227121940. Its totient is φ = 25227121938.

The previous prime is 25227121849. The next prime is 25227121957. The reversal of 25227121939 is 93912172252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25227121939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25227121895 and 25227121904.

It is not a weakly prime, because it can be changed into another prime (25227124939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613560969 + 12613560970.

It is an arithmetic number, because the mean of its divisors is an integer number (12613560970).

Almost surely, 2^25227121939 is an apocalyptic number.

25227121939 is a deficient number, since it is larger than the sum of its proper divisors (1).

25227121939 is an equidigital number, since it uses as much as digits as its factorization.

25227121939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The spelling of 25227121939 in words is "twenty-five billion, two hundred twenty-seven million, one hundred twenty-one thousand, nine hundred thirty-nine".