153320425 has 6 divisors (see below), whose sum is σ = 190117358. Its totient is φ = 122656320.

The previous prime is 153320423. The next prime is 153320429. The reversal of 153320425 is 524023351.

It can be written as a sum of positive squares in 3 ways, for example, as 278784 + 153041641 = 528^2 + 12371^2 .

It is not a de Polignac number, because 153320425 - 2¹ = 153320423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 6132817 = 153320425 / (1 + 5 + 3 + 3 + 2 + 0 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153320425.

It is not an unprimeable number, because it can be changed into a prime (153320423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3066384 + ... + 3066433.

Almost surely, 2^153320425 is an apocalyptic number.

It is an amenable number.

153320425 is a deficient number, since it is larger than the sum of its proper divisors (36796933).

153320425 is an equidigital number, since it uses as much as digits as its factorization.

153320425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132827 (or 6132822 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 153320425 is about 12382.2625153887. The cubic root of 153320425 is about 535.2212378729.

Adding to 153320425 its reverse (524023351), we get a palindrome (677343776).

The spelling of 153320425 in words is "one hundred fifty-three million, three hundred twenty thousand, four hundred twenty-five".