266502025 has 24 divisors (see below), whose sum is σ = 344989080. Its totient is φ = 203965440.

The previous prime is 266502023. The next prime is 266502043. The reversal of 266502025 is 520205662.

It can be written as a sum of positive squares in 12 ways, for example, as 59228416 + 207273609 = 7696^2 + 14397^2 .

It is not a de Polignac number, because 266502025 - 2¹ = 266502023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266501984 and 266502002.

It is not an unprimeable number, because it can be changed into a prime (266502023) 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, 80299 + ... + 83551.

It is an arithmetic number, because the mean of its divisors is an integer number (14374545).

Almost surely, 2^266502025 is an apocalyptic number.

266502025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266502025 is a deficient number, since it is larger than the sum of its proper divisors (78487055).

266502025 is a wasteful number, since it uses less digits than its factorization.

266502025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405 (or 3400 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 266502025 is about 16324.8897392907. The cubic root of 266502025 is about 643.5270959813.

Adding to 266502025 its reverse (520205662), we get a palindrome (786707687).

The spelling of 266502025 in words is "two hundred sixty-six million, five hundred two thousand, twenty-five".