425211505 has 4 divisors (see below), whose sum is σ = 510253812. Its totient is φ = 340169200.

The previous prime is 425211503. The next prime is 425211517. The reversal of 425211505 is 505112524.

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 108513889 + 316697616 = 10417^2 + 17796^2 .

It is not a de Polignac number, because 425211505 - 2¹ = 425211503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425211505.

It is not an unprimeable number, because it can be changed into a prime (425211503) 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, 42521146 + ... + 42521155.

It is an arithmetic number, because the mean of its divisors is an integer number (127563453).

Almost surely, 2^425211505 is an apocalyptic number.

It is an amenable number.

425211505 is a deficient number, since it is larger than the sum of its proper divisors (85042307).

425211505 is an equidigital number, since it uses as much as digits as its factorization.

425211505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85042306.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 425211505 is about 20620.6572397681. The cubic root of 425211505 is about 751.9719985660.

The spelling of 425211505 in words is "four hundred twenty-five million, two hundred eleven thousand, five hundred five".