425135771 has 4 divisors (see below), whose sum is σ = 429518712. Its totient is φ = 420752832.

The previous prime is 425135743. The next prime is 425135783. The reversal of 425135771 is 177531524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425135771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425135701) 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, 2191325 + ... + 2191518.

It is an arithmetic number, because the mean of its divisors is an integer number (107379678).

Almost surely, 2^425135771 is an apocalyptic number.

425135771 is a deficient number, since it is larger than the sum of its proper divisors (4382941).

425135771 is an equidigital number, since it uses as much as digits as its factorization.

425135771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382940.

The product of its digits is 29400, while the sum is 35.

The square root of 425135771 is about 20618.8207955741. The cubic root of 425135771 is about 751.9273515859.

It can be divided in two parts, 42513 and 5771, that added together give a palindrome (48284).

The spelling of 425135771 in words is "four hundred twenty-five million, one hundred thirty-five thousand, seven hundred seventy-one".