425311691 has 4 divisors (see below), whose sum is σ = 486070512. Its totient is φ = 364552872.

The previous prime is 425311681. The next prime is 425311693. The reversal of 425311691 is 196113524.

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 425311691 - 2¹⁰ = 425310667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425311693) 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, 30379400 + ... + 30379413.

It is an arithmetic number, because the mean of its divisors is an integer number (121517628).

Almost surely, 2^425311691 is an apocalyptic number.

425311691 is a deficient number, since it is larger than the sum of its proper divisors (60758821).

425311691 is an equidigital number, since it uses as much as digits as its factorization.

425311691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60758820.

The product of its digits is 6480, while the sum is 32.

The square root of 425311691 is about 20623.0863597086. The cubic root of 425311691 is about 752.0310524326.

The spelling of 425311691 in words is "four hundred twenty-five million, three hundred eleven thousand, six hundred ninety-one".