425811583 has 4 divisors (see below), whose sum is σ = 428424088. Its totient is φ = 423199080.

The previous prime is 425811557. The next prime is 425811613. The reversal of 425811583 is 385118524.

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

It is a cyclic number.

It is not a de Polignac number, because 425811583 - 2¹⁷ = 425680511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425811283) 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, 1306008 + ... + 1306333.

It is an arithmetic number, because the mean of its divisors is an integer number (107106022).

Almost surely, 2^425811583 is an apocalyptic number.

425811583 is a deficient number, since it is larger than the sum of its proper divisors (2612505).

425811583 is a wasteful number, since it uses less digits than its factorization.

425811583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612504.

The product of its digits is 38400, while the sum is 37.

The square root of 425811583 is about 20635.2025189965. The cubic root of 425811583 is about 752.3255714294.

The spelling of 425811583 in words is "four hundred twenty-five million, eight hundred eleven thousand, five hundred eighty-three".