425542505 has 4 divisors (see below), whose sum is σ = 510651012. Its totient is φ = 340434000.

The previous prime is 425542501. The next prime is 425542511. The reversal of 425542505 is 505245524.

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 180526096 + 245016409 = 13436^2 + 15653^2 .

It is not a de Polignac number, because 425542505 - 2² = 425542501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425542501) 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, 42554246 + ... + 42554255.

It is an arithmetic number, because the mean of its divisors is an integer number (127662753).

Almost surely, 2^425542505 is an apocalyptic number.

It is an amenable number.

425542505 is a deficient number, since it is larger than the sum of its proper divisors (85108507).

425542505 is an equidigital number, since it uses as much as digits as its factorization.

425542505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85108506.

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 425542505 is about 20628.6816108059. The cubic root of 425542505 is about 752.1670686833.

The spelling of 425542505 in words is "four hundred twenty-five million, five hundred forty-two thousand, five hundred five".