264421125 has 32 divisors (see below), whose sum is σ = 488891520. Its totient is φ = 141022800.

The previous prime is 264421121. The next prime is 264421169. The reversal of 264421125 is 521124462.

264421125 is a `hidden beast` number, since 2 + 644 + 2 + 1 + 12 + 5 = 666.

It is not a de Polignac number, because 264421125 - 2² = 264421121 is a prime.

It is a super-3 number, since 3×264421125³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264421121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35799 + ... + 42548.

It is an arithmetic number, because the mean of its divisors is an integer number (15277860).

Almost surely, 2^264421125 is an apocalyptic number.

264421125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

264421125 is a deficient number, since it is larger than the sum of its proper divisors (224470395).

264421125 is an equidigital number, since it uses as much as digits as its factorization.

264421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78371 (or 78355 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 264421125 is about 16261.0308713808. The cubic root of 264421125 is about 641.8477890529.

Adding to 264421125 its reverse (521124462), we get a palindrome (785545587).

The spelling of 264421125 in words is "two hundred sixty-four million, four hundred twenty-one thousand, one hundred twenty-five".