157625487889 has 2 divisors, whose sum is σ = 157625487890. Its totient is φ = 157625487888.

The previous prime is 157625487841. The next prime is 157625487913. The reversal of 157625487889 is 988784526751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153356825664 + 4268662225 = 391608^2 + 65335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157625487889 is a prime.

It is not a weakly prime, because it can be changed into another prime (157625487689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78812743944 + 78812743945.

It is an arithmetic number, because the mean of its divisors is an integer number (78812743945).

Almost surely, 2^157625487889 is an apocalyptic number.

It is an amenable number.

157625487889 is a deficient number, since it is larger than the sum of its proper divisors (1).

157625487889 is an equidigital number, since it uses as much as digits as its factorization.

157625487889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270950400, while the sum is 70.

The spelling of 157625487889 in words is "one hundred fifty-seven billion, six hundred twenty-five million, four hundred eighty-seven thousand, eight hundred eighty-nine".