4255625520861 has 32 divisors (see below), whose sum is σ = 6775435927680. Its totient is φ = 2341740499200.

The previous prime is 4255625520833. The next prime is 4255625520889. The reversal of 4255625520861 is 1680255265524.

It is an interprime number because it is at equal distance from previous prime (4255625520833) and next prime (4255625520889).

It is not a de Polignac number, because 4255625520861 - 2²² = 4255621326557 is a prime.

It is a super-2 number, since 2×4255625520861² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4255625520821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81284266 + ... + 81336603.

It is an arithmetic number, because the mean of its divisors is an integer number (211732372740).

Almost surely, 2^{4255625520861} is an apocalyptic number.

It is an amenable number.

4255625520861 is a deficient number, since it is larger than the sum of its proper divisors (2519810406819).

4255625520861 is a wasteful number, since it uses less digits than its factorization.

4255625520861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162620957.

The product of its (nonzero) digits is 5760000, while the sum is 51.

The spelling of 4255625520861 in words is "four trillion, two hundred fifty-five billion, six hundred twenty-five million, five hundred twenty thousand, eight hundred sixty-one".