425400161 has 4 divisors (see below), whose sum is σ = 435293232. Its totient is φ = 415507092.

The previous prime is 425400119. The next prime is 425400167. The reversal of 425400161 is 161004524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425400161 - 2¹⁰ = 425399137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425400167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4946471 + ... + 4946556.

It is an arithmetic number, because the mean of its divisors is an integer number (108823308).

Almost surely, 2^425400161 is an apocalyptic number.

It is an amenable number.

425400161 is a deficient number, since it is larger than the sum of its proper divisors (9893071).

425400161 is an equidigital number, since it uses as much as digits as its factorization.

425400161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893070.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 425400161 is about 20625.2311744620. The cubic root of 425400161 is about 752.0831926833.

Adding to 425400161 its reverse (161004524), we get a palindrome (586404685).

The spelling of 425400161 in words is "four hundred twenty-five million, four hundred thousand, one hundred sixty-one".