425105557 has 4 divisors (see below), whose sum is σ = 430486720. Its totient is φ = 419724396.

The previous prime is 425105539. The next prime is 425105581. The reversal of 425105557 is 755501524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425105557 - 2¹¹ = 425103509 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 (425105537) 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, 2690463 + ... + 2690620.

It is an arithmetic number, because the mean of its divisors is an integer number (107621680).

Almost surely, 2^425105557 is an apocalyptic number.

It is an amenable number.

425105557 is a deficient number, since it is larger than the sum of its proper divisors (5381163).

425105557 is an equidigital number, since it uses as much as digits as its factorization.

425105557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381162.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 425105557 is about 20618.0881024405. The cubic root of 425105557 is about 751.9095382403.

The spelling of 425105557 in words is "four hundred twenty-five million, one hundred five thousand, five hundred fifty-seven".