2825649 has 6 divisors (see below), whose sum is σ = 4081506. Its totient is φ = 1883760.

The previous prime is 2825639. The next prime is 2825651. The reversal of 2825649 is 9465282.

It is a happy number.

2825649 is a `hidden beast` number, since 2 + 8 + 2 + 5 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2822400 + 3249 = 1680^2 + 57^2 .

It is not a de Polignac number, because 2825649 - 2⁷ = 2825521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2825639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156972 + ... + 156989.

It is an arithmetic number, because the mean of its divisors is an integer number (680251).

2^2825649 is an apocalyptic number.

It is an amenable number.

2825649 is a deficient number, since it is larger than the sum of its proper divisors (1255857).

2825649 is a wasteful number, since it uses less digits than its factorization.

2825649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313967 (or 313964 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2825649 is about 1680.9666861660. The cubic root of 2825649 is about 141.3750389904.

The spelling of 2825649 in words is "two million, eight hundred twenty-five thousand, six hundred forty-nine".