425847749 has 2 divisors, whose sum is σ = 425847750. Its totient is φ = 425847748.

The previous prime is 425847743. The next prime is 425847757. The reversal of 425847749 is 947748524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374151649 + 51696100 = 19343^2 + 7190^2 .

It is a cyclic number.

It is not a de Polignac number, because 425847749 - 2⁴ = 425847733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425847697 and 425847706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425847743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212923874 + 212923875.

It is an arithmetic number, because the mean of its divisors is an integer number (212923875).

Almost surely, 2^425847749 is an apocalyptic number.

It is an amenable number.

425847749 is a deficient number, since it is larger than the sum of its proper divisors (1).

425847749 is an equidigital number, since it uses as much as digits as its factorization.

425847749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 50.

The square root of 425847749 is about 20636.0788184190. The cubic root of 425847749 is about 752.3468702365.

The spelling of 425847749 in words is "four hundred twenty-five million, eight hundred forty-seven thousand, seven hundred forty-nine".