425052169 has 2 divisors, whose sum is σ = 425052170. Its totient is φ = 425052168.

The previous prime is 425052053. The next prime is 425052181. The reversal of 425052169 is 961250524.

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., 374925769 + 50126400 = 19363^2 + 7080^2 .

It is a cyclic number.

It is not a de Polignac number, because 425052169 - 2¹⁵ = 425019401 is a prime.

It is a super-2 number, since 2×425052169² = 361338692743209122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425052269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212526084 + 212526085.

It is an arithmetic number, because the mean of its divisors is an integer number (212526085).

Almost surely, 2^425052169 is an apocalyptic number.

It is an amenable number.

425052169 is a deficient number, since it is larger than the sum of its proper divisors (1).

425052169 is an equidigital number, since it uses as much as digits as its factorization.

425052169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 425052169 is about 20616.7933733643. The cubic root of 425052169 is about 751.8780600765.

The spelling of 425052169 in words is "four hundred twenty-five million, fifty-two thousand, one hundred sixty-nine".