649425 has 24 divisors (see below), whose sum is σ = 1228096. Its totient is φ = 296640.

The previous prime is 649423. The next prime is 649427. The reversal of 649425 is 524946.

649425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649423) and next prime (649427).

It is not a de Polignac number, because 649425 - 2¹ = 649423 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 649392 and 649401.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649425.

It is not an unprimeable number, because it can be changed into a prime (649421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94 + ... + 1143.

2⁶⁴⁹⁴²⁵ is an apocalyptic number.

It is an amenable number.

649425 is a deficient number, since it is larger than the sum of its proper divisors (578671).

649425 is a wasteful number, since it uses less digits than its factorization.

649425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1252 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 649425 is about 805.8690960696. The cubic root of 649425 is about 86.5983600505.

The spelling of 649425 in words is "six hundred forty-nine thousand, four hundred twenty-five".