425324772991 has 4 divisors (see below), whose sum is σ = 435698547984. Its totient is φ = 414950998000.

The previous prime is 425324772979. The next prime is 425324773021. The reversal of 425324772991 is 199277423524.

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

It is a cyclic number.

It is not a de Polignac number, because 425324772991 - 2⁷ = 425324772863 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 (425324772941) 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, 5186887435 + ... + 5186887516.

It is an arithmetic number, because the mean of its divisors is an integer number (108924636996).

Almost surely, 2^425324772991 is an apocalyptic number.

425324772991 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

425324772991 is a deficient number, since it is larger than the sum of its proper divisors (10373774993).

425324772991 is a wasteful number, since it uses less digits than its factorization.

425324772991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10373774992.

The product of its digits is 7620480, while the sum is 55.

The spelling of 425324772991 in words is "four hundred twenty-five billion, three hundred twenty-four million, seven hundred seventy-two thousand, nine hundred ninety-one".