425156189 has 2 divisors, whose sum is σ = 425156190. Its totient is φ = 425156188.

The previous prime is 425156131. The next prime is 425156239. The reversal of 425156189 is 981651524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294396964 + 130759225 = 17158^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 425156189 - 2⁸ = 425155933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425156119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212578094 + 212578095.

It is an arithmetic number, because the mean of its divisors is an integer number (212578095).

Almost surely, 2^425156189 is an apocalyptic number.

It is an amenable number.

425156189 is a deficient number, since it is larger than the sum of its proper divisors (1).

425156189 is an equidigital number, since it uses as much as digits as its factorization.

425156189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 425156189 is about 20619.3159197874. The cubic root of 425156189 is about 751.9393890007.

The spelling of 425156189 in words is "four hundred twenty-five million, one hundred fifty-six thousand, one hundred eighty-nine".