266653025 has 12 divisors (see below), whose sum is σ = 331562112. Its totient is φ = 212733840.

The previous prime is 266652977. The next prime is 266653027. The reversal of 266653025 is 520356662.

It is not a de Polignac number, because 266653025 - 2¹⁸ = 266390881 is a prime.

It is a super-2 number, since 2×266653025² = 142207671483301250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266653027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5357 + ... + 23706.

It is an arithmetic number, because the mean of its divisors is an integer number (27630176).

Almost surely, 2^266653025 is an apocalyptic number.

266653025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266653025 is a deficient number, since it is larger than the sum of its proper divisors (64909087).

266653025 is a wasteful number, since it uses less digits than its factorization.

266653025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29440 (or 29435 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 266653025 is about 16329.5139241804. The cubic root of 266653025 is about 643.6486138130.

The spelling of 266653025 in words is "two hundred sixty-six million, six hundred fifty-three thousand, twenty-five".