425851232318 has 4 divisors (see below), whose sum is σ = 638776848480. Its totient is φ = 212925616158.

The previous prime is 425851232309. The next prime is 425851232321. The reversal of 425851232318 is 813232158524.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106462808078 + ... + 106462808081.

It is an arithmetic number, because the mean of its divisors is an integer number (159694212120).

Almost surely, 2^425851232318 is an apocalyptic number.

425851232318 is a deficient number, since it is larger than the sum of its proper divisors (212925616162).

425851232318 is a wasteful number, since it uses less digits than its factorization.

425851232318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212925616161.

The product of its digits is 460800, while the sum is 44.

The spelling of 425851232318 in words is "four hundred twenty-five billion, eight hundred fifty-one million, two hundred thirty-two thousand, three hundred eighteen".