265400252775 has 432 divisors, whose sum is σ = 610583920128. Its totient is φ = 107712000000.

The previous prime is 265400252693. The next prime is 265400252779. The reversal of 265400252775 is 577252004562.

265400252775 is a `hidden beast` number, since 2 + 6 + 54 + 0 + 0 + 2 + 527 + 75 = 666.

It is not a de Polignac number, because 265400252775 - 2⁸ = 265400252519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 265400252775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265400252779) by changing a digit.

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 431 ways as a sum of consecutive naturals, for example, 1057371400 + ... + 1057371650.

It is an arithmetic number, because the mean of its divisors is an integer number (1413388704).

Almost surely, 2^265400252775 is an apocalyptic number.

265400252775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

265400252775 is an abundant number, since it is smaller than the sum of its proper divisors (345183667353).

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

265400252775 is a wasteful number, since it uses less digits than its factorization.

265400252775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 45.

The spelling of 265400252775 in words is "two hundred sixty-five billion, four hundred million, two hundred fifty-two thousand, seven hundred seventy-five".