649696325 has 12 divisors (see below), whose sum is σ = 812756388. Its totient is φ = 515155200.

The previous prime is 649696319. The next prime is 649696339. The reversal of 649696325 is 523696946.

It can be written as a sum of positive squares in 6 ways, for example, as 29138404 + 620557921 = 5398^2 + 24911^2 .

It is not a de Polignac number, because 649696325 - 2¹² = 649692229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112166 + ... + 117815.

It is an arithmetic number, because the mean of its divisors is an integer number (67729699).

Almost surely, 2^649696325 is an apocalyptic number.

It is an amenable number.

649696325 is a deficient number, since it is larger than the sum of its proper divisors (163060063).

649696325 is a wasteful number, since it uses less digits than its factorization.

649696325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230104 (or 230099 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 50.

The square root of 649696325 is about 25489.1413154700. The cubic root of 649696325 is about 866.1041842451.

The spelling of 649696325 in words is "six hundred forty-nine million, six hundred ninety-six thousand, three hundred twenty-five".