25049189507 has 2 divisors, whose sum is σ = 25049189508. Its totient is φ = 25049189506.

The previous prime is 25049189449. The next prime is 25049189509. The reversal of 25049189507 is 70598194052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25049189507 - 2⁸ = 25049189251 is a prime.

Together with 25049189509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25049189509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12524594753 + 12524594754.

It is an arithmetic number, because the mean of its divisors is an integer number (12524594754).

Almost surely, 2^25049189507 is an apocalyptic number.

25049189507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25049189507 is an equidigital number, since it uses as much as digits as its factorization.

25049189507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 25049189507 in words is "twenty-five billion, forty-nine million, one hundred eighty-nine thousand, five hundred seven".