260625553 has 4 divisors (see below), whose sum is σ = 263554020. Its totient is φ = 257697088.

The previous prime is 260625529. The next prime is 260625557. The reversal of 260625553 is 355526062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44182609 + 216442944 = 6647^2 + 14712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260625553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260625557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464100 + ... + 1464277.

It is an arithmetic number, because the mean of its divisors is an integer number (65888505).

Almost surely, 2^260625553 is an apocalyptic number.

It is an amenable number.

260625553 is a deficient number, since it is larger than the sum of its proper divisors (2928467).

260625553 is an equidigital number, since it uses as much as digits as its factorization.

260625553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928466.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 260625553 is about 16143.9014181827. The cubic root of 260625553 is about 638.7618910347.

The spelling of 260625553 in words is "two hundred sixty million, six hundred twenty-five thousand, five hundred fifty-three".