649858225 has 12 divisors (see below), whose sum is σ = 806158720. Its totient is φ = 519670800.

The previous prime is 649858219. The next prime is 649858229. The reversal of 649858225 is 522858946.

It is a happy number.

It is not a de Polignac number, because 649858225 - 2³ = 649858217 is a prime.

It is a super-3 number, since 3×649858225³ (a number of 27 digits) contains 333 as substring.

Its product of digits (1382400) is a multiple of the sum of its prime factors (10800).

It is not an unprimeable number, because it can be changed into a prime (649858229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87196 + ... + 94354.

Almost surely, 2^649858225 is an apocalyptic number.

It is an amenable number.

649858225 is a deficient number, since it is larger than the sum of its proper divisors (156300495).

649858225 is a wasteful number, since it uses less digits than its factorization.

649858225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800 (or 10795 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 49.

The square root of 649858225 is about 25492.3169798275. The cubic root of 649858225 is about 866.1761207362.

The spelling of 649858225 in words is "six hundred forty-nine million, eight hundred fifty-eight thousand, two hundred twenty-five".