425812366849 has 3 divisors (see below), whose sum is σ = 425813019393. Its totient is φ = 425811714306.

The previous prime is 425812366843. The next prime is 425812366891. The reversal of 425812366849 is 948663218524.

It is a happy number.

The square root of 425812366849 is 652543.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 425812366849 - 2¹⁵ = 425812334081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425812366793 and 425812366802.

It is not an unprimeable number, because it can be changed into a prime (425812366843) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 326272 + ... + 978814.

It is an arithmetic number, because the mean of its divisors is an integer number (141937673131).

Almost surely, 2^425812366849 is an apocalyptic number.

425812366849 is the 652543-rd square number.

425812366849 is the 326272-nd centered octagonal number.

It is an amenable number.

425812366849 is a deficient number, since it is larger than the sum of its proper divisors (652544).

425812366849 is an frugal number, since it uses more digits than its factorization.

425812366849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305086 (or 652543 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 58.

The spelling of 425812366849 in words is "four hundred twenty-five billion, eight hundred twelve million, three hundred sixty-six thousand, eight hundred forty-nine".