264787225 has 12 divisors (see below), whose sum is σ = 336345660. Its totient is φ = 206662400.

The previous prime is 264787183. The next prime is 264787241. The reversal of 264787225 is 522787462.

264787225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 28611801 + 236175424 = 5349^2 + 15368^2 .

It is not a de Polignac number, because 264787225 - 2¹⁹ = 264262937 is a prime.

It is a super-2 number, since 2×264787225² = 140224549046401250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128140 + ... + 130189.

It is an arithmetic number, because the mean of its divisors is an integer number (28028805).

Almost surely, 2^264787225 is an apocalyptic number.

264787225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

264787225 is a deficient number, since it is larger than the sum of its proper divisors (71558435).

264787225 is a wasteful number, since it uses less digits than its factorization.

264787225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258380 (or 258375 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 264787225 is about 16272.2839515539. The cubic root of 264787225 is about 642.1438724474.

The spelling of 264787225 in words is "two hundred sixty-four million, seven hundred eighty-seven thousand, two hundred twenty-five".