1639607607225 has 120 divisors (see below), whose sum is σ = 3582962882048. Its totient is φ = 725356166400.

The previous prime is 1639607607133. The next prime is 1639607607241. The reversal of 1639607607225 is 5227067069361.

1639607607225 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 6 + 0 + 7 + 607 + 2 + 25 = 666.

It is not a de Polignac number, because 1639607607225 - 2¹⁰ = 1639607606201 is a prime.

It is a super-3 number, since 3×1639607607225³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1426204 + ... + 2305053.

Almost surely, 2^{1639607607225} is an apocalyptic number.

1639607607225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1639607607225 is an abundant number, since it is smaller than the sum of its proper divisors (1943355274823).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1639607607225 is a wasteful number, since it uses less digits than its factorization.

1639607607225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731317 (or 3731303 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 1639607607225 in words is "one trillion, six hundred thirty-nine billion, six hundred seven million, six hundred seven thousand, two hundred twenty-five".