425505401 has 4 divisors (see below), whose sum is σ = 425575332. Its totient is φ = 425435472.

The previous prime is 425505397. The next prime is 425505403. The reversal of 425505401 is 104505524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 421891600 + 3613801 = 20540^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 425505401 - 2² = 425505397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425505403) 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, 24866 + ... + 38331.

It is an arithmetic number, because the mean of its divisors is an integer number (106393833).

Almost surely, 2^425505401 is an apocalyptic number.

It is an amenable number.

425505401 is a deficient number, since it is larger than the sum of its proper divisors (69931).

425505401 is an equidigital number, since it uses as much as digits as its factorization.

425505401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69930.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 425505401 is about 20627.7822608248. The cubic root of 425505401 is about 752.1452070065.

The spelling of 425505401 in words is "four hundred twenty-five million, five hundred five thousand, four hundred one".