3640007025 has 48 divisors (see below), whose sum is σ = 6977589120. Its totient is φ = 1856923200.

The previous prime is 3640007009. The next prime is 3640007027. The reversal of 3640007025 is 5207000463.

It is a happy number.

It is not a de Polignac number, because 3640007025 - 2⁴ = 3640007009 is a prime.

It is a super-2 number, since 2×3640007025² = 26499302284098701250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 3640007025.

It is not an unprimeable number, because it can be changed into a prime (3640007027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101706 + ... + 132755.

It is an arithmetic number, because the mean of its divisors is an integer number (145366440).

Almost surely, 2^3640007025 is an apocalyptic number.

It is an amenable number.

3640007025 is a deficient number, since it is larger than the sum of its proper divisors (3337582095).

3640007025 is a wasteful number, since it uses less digits than its factorization.

3640007025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234503 (or 234492 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3640007025 is about 60332.4707350859. The cubic root of 3640007025 is about 1538.2753257906.

Adding to 3640007025 its reverse (5207000463), we get a palindrome (8847007488).

The spelling of 3640007025 in words is "three billion, six hundred forty million, seven thousand, twenty-five".