25612556545045 has 16 divisors (see below), whose sum is σ = 31125451593600. Its totient is φ = 20230108167744.

The previous prime is 25612556545039. The next prime is 25612556545073. The reversal of 25612556545045 is 54054565521652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25612556545045 - 2³⁵ = 25578196806677 is a prime.

It is a super-2 number, since 2×25612556545045² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19278729 + ... + 20564398.

It is an arithmetic number, because the mean of its divisors is an integer number (1945340724600).

Almost surely, 2^{25612556545045} is an apocalyptic number.

It is an amenable number.

25612556545045 is a deficient number, since it is larger than the sum of its proper divisors (5512895048555).

25612556545045 is a wasteful number, since it uses less digits than its factorization.

25612556545045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39844764.

The product of its (nonzero) digits is 36000000, while the sum is 55.

The spelling of 25612556545045 in words is "twenty-five trillion, six hundred twelve billion, five hundred fifty-six million, five hundred forty-five thousand, forty-five".