265920425 has 12 divisors (see below), whose sum is σ = 332152476. Its totient is φ = 211180800.

The previous prime is 265920379. The next prime is 265920427. The reversal of 265920425 is 524029562.

It can be written as a sum of positive squares in 6 ways, for example, as 34058896 + 231861529 = 5836^2 + 15227^2 .

It is a de Polignac number, because none of the positive numbers 2^k-265920425 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265920427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35396 + ... + 42245.

It is an arithmetic number, because the mean of its divisors is an integer number (27679373).

Almost surely, 2^265920425 is an apocalyptic number.

265920425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265920425 is a deficient number, since it is larger than the sum of its proper divisors (66232051).

265920425 is a wasteful number, since it uses less digits than its factorization.

265920425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77788 (or 77783 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 265920425 is about 16307.0667196771. The cubic root of 265920425 is about 643.0586217976.

Adding to 265920425 its reverse (524029562), we get a palindrome (789949987).

The spelling of 265920425 in words is "two hundred sixty-five million, nine hundred twenty thousand, four hundred twenty-five".