425912189 has 4 divisors (see below), whose sum is σ = 448328640. Its totient is φ = 403495740.

The previous prime is 425912087. The next prime is 425912191. The reversal of 425912189 is 981219524.

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 a de Polignac number, because none of the positive numbers 2^k-425912189 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 (425912489) 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, 11208197 + ... + 11208234.

It is an arithmetic number, because the mean of its divisors is an integer number (112082160).

Almost surely, 2^425912189 is an apocalyptic number.

It is an amenable number.

425912189 is a deficient number, since it is larger than the sum of its proper divisors (22416451).

425912189 is a wasteful number, since it uses less digits than its factorization.

425912189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22416450.

The product of its digits is 51840, while the sum is 41.

The square root of 425912189 is about 20637.6401024923. The cubic root of 425912189 is about 752.3848171218.

The spelling of 425912189 in words is "four hundred twenty-five million, nine hundred twelve thousand, one hundred eighty-nine".