425702649 has 16 divisors (see below), whose sum is σ = 584138432. Its totient is φ = 275565888.

The previous prime is 425702647. The next prime is 425702663. The reversal of 425702649 is 946207524.

It is not a de Polignac number, because 425702649 - 2¹ = 425702647 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425702647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54387 + ... + 61719.

It is an arithmetic number, because the mean of its divisors is an integer number (36508652).

Almost surely, 2^425702649 is an apocalyptic number.

It is an amenable number.

425702649 is a deficient number, since it is larger than the sum of its proper divisors (158435783).

425702649 is a wasteful number, since it uses less digits than its factorization.

425702649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 425702649 is about 20632.5628316019. The cubic root of 425702649 is about 752.2614109519.

The spelling of 425702649 in words is "four hundred twenty-five million, seven hundred two thousand, six hundred forty-nine".