425166601 has 4 divisors (see below), whose sum is σ = 425266452. Its totient is φ = 425066752.

The previous prime is 425166571. The next prime is 425166611. The reversal of 425166601 is 106661524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 371525625 + 53640976 = 19275^2 + 7324^2 .

It is a cyclic number.

It is not a de Polignac number, because 425166601 - 2²³ = 416777993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425166611) 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, 43240 + ... + 52153.

It is an arithmetic number, because the mean of its divisors is an integer number (106316613).

Almost surely, 2^425166601 is an apocalyptic number.

It is an amenable number.

425166601 is a deficient number, since it is larger than the sum of its proper divisors (99851).

425166601 is an equidigital number, since it uses as much as digits as its factorization.

425166601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99850.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 425166601 is about 20619.5683999447. The cubic root of 425166601 is about 751.9455272382.

The spelling of 425166601 in words is "four hundred twenty-five million, one hundred sixty-six thousand, six hundred one".