425341661 has 4 divisors (see below), whose sum is σ = 431690112. Its totient is φ = 418993212.

The previous prime is 425341643. The next prime is 425341663. The reversal of 425341661 is 166143524.

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 425341661 - 2⁶ = 425341597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425341663) 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, 3174125 + ... + 3174258.

It is an arithmetic number, because the mean of its divisors is an integer number (107922528).

Almost surely, 2^425341661 is an apocalyptic number.

It is an amenable number.

425341661 is a deficient number, since it is larger than the sum of its proper divisors (6348451).

425341661 is an equidigital number, since it uses as much as digits as its factorization.

425341661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348450.

The product of its digits is 17280, while the sum is 32.

The square root of 425341661 is about 20623.8129597803. The cubic root of 425341661 is about 752.0487162164.

The spelling of 425341661 in words is "four hundred twenty-five million, three hundred forty-one thousand, six hundred sixty-one".