156925181953 has 2 divisors, whose sum is σ = 156925181954. Its totient is φ = 156925181952.

The previous prime is 156925181951. The next prime is 156925181981. The reversal of 156925181953 is 359181529651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114387356944 + 42537825009 = 338212^2 + 206247^2 .

It is a cyclic number.

It is not a de Polignac number, because 156925181953 - 2¹ = 156925181951 is a prime.

Together with 156925181951, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 156925181894 and 156925181903.

It is not a weakly prime, because it can be changed into another prime (156925181951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78462590976 + 78462590977.

It is an arithmetic number, because the mean of its divisors is an integer number (78462590977).

Almost surely, 2^156925181953 is an apocalyptic number.

It is an amenable number.

156925181953 is a deficient number, since it is larger than the sum of its proper divisors (1).

156925181953 is an equidigital number, since it uses as much as digits as its factorization.

156925181953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916000, while the sum is 55.

The spelling of 156925181953 in words is "one hundred fifty-six billion, nine hundred twenty-five million, one hundred eighty-one thousand, nine hundred fifty-three".