3625644132225 has 36 divisors (see below), whose sum is σ = 6494734802556. Its totient is φ = 1933437671040.

The previous prime is 3625644132221. The next prime is 3625644132241. The reversal of 3625644132225 is 5222314465263.

3625644132225 is a `hidden beast` number, since 3 + 6 + 2 + 5 + 6 + 4 + 413 + 2 + 225 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 31431034944 + 3594213097281 = 177288^2 + 1895841^2 .

It is not a de Polignac number, because 3625644132225 - 2² = 3625644132221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (3625644132221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 833719 + ... + 2818931.

It is an arithmetic number, because the mean of its divisors is an integer number (180409300071).

Almost surely, 2^{3625644132225} is an apocalyptic number.

It is an amenable number.

3625644132225 is a deficient number, since it is larger than the sum of its proper divisors (2869090670331).

3625644132225 is a wasteful number, since it uses less digits than its factorization.

3625644132225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993346 (or 1993338 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

Adding to 3625644132225 its reverse (5222314465263), we get a palindrome (8847958597488).

The spelling of 3625644132225 in words is "three trillion, six hundred twenty-five billion, six hundred forty-four million, one hundred thirty-two thousand, two hundred twenty-five".