1625706726025 has 12 divisors (see below), whose sum is σ = 2015952133132. Its totient is φ = 1300516482240.

The previous prime is 1625706726011. The next prime is 1625706726029. The reversal of 1625706726025 is 5206276075261.

It can be written as a sum of positive squares in 6 ways, for example, as 80051082489 + 1545655643536 = 282933^2 + 1243244^2 .

It is not a de Polignac number, because 1625706726025 - 2¹⁵ = 1625706693257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625706726025.

It is not an unprimeable number, because it can be changed into a prime (1625706726029) 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 11 ways as a sum of consecutive naturals, for example, 536694 + ... + 1881343.

Almost surely, 2^{1625706726025} is an apocalyptic number.

It is an amenable number.

1625706726025 is a deficient number, since it is larger than the sum of its proper divisors (390245407107).

1625706726025 is a wasteful number, since it uses less digits than its factorization.

1625706726025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444940 (or 2444935 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 1625706726025 in words is "one trillion, six hundred twenty-five billion, seven hundred six million, seven hundred twenty-six thousand, twenty-five".