264444425 has 24 divisors (see below), whose sum is σ = 382416000. Its totient is φ = 181327440.

The previous prime is 264444403. The next prime is 264444437. The reversal of 264444425 is 524444462.

It is not a de Polignac number, because 264444425 - 2¹² = 264440329 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6845 + ... + 23994.

It is an arithmetic number, because the mean of its divisors is an integer number (15934000).

Almost surely, 2^264444425 is an apocalyptic number.

264444425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

264444425 is a deficient number, since it is larger than the sum of its proper divisors (117971575).

264444425 is an equidigital number, since it uses as much as digits as its factorization.

264444425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30870 (or 30851 counting only the distinct ones).

The product of its digits is 122880, while the sum is 35.

The square root of 264444425 is about 16261.7472923422. The cubic root of 264444425 is about 641.8666410694.

Adding to 264444425 its reverse (524444462), we get a palindrome (788888887).

The spelling of 264444425 in words is "two hundred sixty-four million, four hundred forty-four thousand, four hundred twenty-five".