265250440232540 has 72 divisors (see below), whose sum is σ = 647971683860592. Its totient is φ = 90942621934080.

The previous prime is 265250440232527. The next prime is 265250440232549. The reversal of 265250440232540 is 45232044052562.

It is a junction number, because it is equal to n+sod(n) for n = 265250440232491 and 265250440232500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265250440232549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323618879 + ... + 324437481.

It is an arithmetic number, because the mean of its divisors is an integer number (8999606720286).

Almost surely, 2^{265250440232540} is an apocalyptic number.

265250440232540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265250440232540 is an abundant number, since it is smaller than the sum of its proper divisors (382721243628052).

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

265250440232540 is a wasteful number, since it uses less digits than its factorization.

265250440232540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149267 (or 1149258 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 44.

The spelling of 265250440232540 in words is "two hundred sixty-five trillion, two hundred fifty billion, four hundred forty million, two hundred thirty-two thousand, five hundred forty".