425603191 has 4 divisors (see below), whose sum is σ = 458341912. Its totient is φ = 392864472.

The previous prime is 425603183. The next prime is 425603209. The reversal of 425603191 is 191306524.

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

It is not a de Polignac number, because 425603191 - 2³ = 425603183 is a prime.

It is a super-2 number, since 2×425603191² = 362276152378764962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425603111) 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, 16369341 + ... + 16369366.

It is an arithmetic number, because the mean of its divisors is an integer number (114585478).

Almost surely, 2^425603191 is an apocalyptic number.

425603191 is a deficient number, since it is larger than the sum of its proper divisors (32738721).

425603191 is a wasteful number, since it uses less digits than its factorization.

425603191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32738720.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 425603191 is about 20630.1524715645. The cubic root of 425603191 is about 752.2028221356.

The spelling of 425603191 in words is "four hundred twenty-five million, six hundred three thousand, one hundred ninety-one".