265556140 has 12 divisors (see below), whose sum is σ = 557667936. Its totient is φ = 106222448.

The previous prime is 265556087. The next prime is 265556143. The reversal of 265556140 is 41655562.

It is a junction number, because it is equal to n+sod(n) for n = 265556096 and 265556105.

It is not an unprimeable number, because it can be changed into a prime (265556143) 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, 6638884 + ... + 6638923.

It is an arithmetic number, because the mean of its divisors is an integer number (46472328).

Almost surely, 2^265556140 is an apocalyptic number.

265556140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265556140 is an abundant number, since it is smaller than the sum of its proper divisors (292111796).

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

265556140 is a wasteful number, since it uses less digits than its factorization.

265556140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13277816 (or 13277814 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 265556140 is about 16295.8933477119. The cubic root of 265556140 is about 642.7648451147.

The spelling of 265556140 in words is "two hundred sixty-five million, five hundred fifty-six thousand, one hundred forty".