425777471 has 4 divisors (see below), whose sum is σ = 486602832. Its totient is φ = 364952112.

The previous prime is 425777437. The next prime is 425777543. The reversal of 425777471 is 174777524.

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

It is not a de Polignac number, because 425777471 - 2¹⁰ = 425776447 is a prime.

It is a super-3 number, since 3×425777471³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425777411) 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, 30412670 + ... + 30412683.

It is an arithmetic number, because the mean of its divisors is an integer number (121650708).

Almost surely, 2^425777471 is an apocalyptic number.

425777471 is a deficient number, since it is larger than the sum of its proper divisors (60825361).

425777471 is an equidigital number, since it uses as much as digits as its factorization.

425777471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60825360.

The product of its digits is 384160, while the sum is 44.

The square root of 425777471 is about 20634.3759537331. The cubic root of 425777471 is about 752.3054811545.

The spelling of 425777471 in words is "four hundred twenty-five million, seven hundred seventy-seven thousand, four hundred seventy-one".