425799149 has 4 divisors (see below), whose sum is σ = 427960764. Its totient is φ = 423637536.

The previous prime is 425799131. The next prime is 425799169. The reversal of 425799149 is 941997524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 411684100 + 14115049 = 20290^2 + 3757^2 .

It is a cyclic number.

It is not a de Polignac number, because 425799149 - 2¹² = 425795053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425799097 and 425799106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425799169) 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, 1080512 + ... + 1080905.

It is an arithmetic number, because the mean of its divisors is an integer number (106990191).

Almost surely, 2^425799149 is an apocalyptic number.

It is an amenable number.

425799149 is a deficient number, since it is larger than the sum of its proper divisors (2161615).

425799149 is a wasteful number, since it uses less digits than its factorization.

425799149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161614.

The product of its digits is 816480, while the sum is 50.

The square root of 425799149 is about 20634.9012355281. The cubic root of 425799149 is about 752.3182485448.

The spelling of 425799149 in words is "four hundred twenty-five million, seven hundred ninety-nine thousand, one hundred forty-nine".