276155505025 has 27 divisors (see below), whose sum is σ = 344692459011. Its totient is φ = 219476112240.

The previous prime is 276155505019. The next prime is 276155505029. The reversal of 276155505025 is 520505551672.

It is a happy number.

The square root of 276155505025 is 525505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 99415981809 + 176739523216 = 315303^2 + 420404^2 .

It is not a de Polignac number, because 276155505025 - 2²⁹ = 275618634113 is a prime.

It is a super-2 number, since 2×276155505025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276155505029) 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 26 ways as a sum of consecutive naturals, for example, 596447944 + ... + 596448406.

Almost surely, 2^276155505025 is an apocalyptic number.

276155505025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

276155505025 is the 525505-th square number.

276155505025 is the 262753-rd centered octagonal number.

It is an amenable number.

276155505025 is a deficient number, since it is larger than the sum of its proper divisors (68536953986).

276155505025 is an frugal number, since it uses more digits than its factorization.

276155505025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 276155505025 in words is "two hundred seventy-six billion, one hundred fifty-five million, five hundred five thousand, twenty-five".