425901505 has 4 divisors (see below), whose sum is σ = 511081812. Its totient is φ = 340721200.

The previous prime is 425901503. The next prime is 425901521. The reversal of 425901505 is 505109524.

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 307265841 + 118635664 = 17529^2 + 10892^2 .

It is not a de Polignac number, because 425901505 - 2¹ = 425901503 is a prime.

It is a super-2 number, since 2×425901505² = 362784183922530050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425901503) 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, 42590146 + ... + 42590155.

It is an arithmetic number, because the mean of its divisors is an integer number (127770453).

Almost surely, 2^425901505 is an apocalyptic number.

It is an amenable number.

425901505 is a deficient number, since it is larger than the sum of its proper divisors (85180307).

425901505 is an equidigital number, since it uses as much as digits as its factorization.

425901505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85180306.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 425901505 is about 20637.3812534440. The cubic root of 425901505 is about 752.3785258825.

The spelling of 425901505 in words is "four hundred twenty-five million, nine hundred one thousand, five hundred five".