1253320425 has 192 divisors, whose sum is σ = 2768394240. Its totient is φ = 544008960.

The previous prime is 1253320363. The next prime is 1253320469. The reversal of 1253320425 is 5240233521.

It is a happy number.

It is not a de Polignac number, because 1253320425 - 2⁹ = 1253319913 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11713222 + ... + 11713328.

It is an arithmetic number, because the mean of its divisors is an integer number (14418720).

Almost surely, 2^1253320425 is an apocalyptic number.

1253320425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253320425 is an abundant number, since it is smaller than the sum of its proper divisors (1515073815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253320425 is a wasteful number, since it uses less digits than its factorization.

1253320425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1253320425 is about 35402.2658173174. The cubic root of 1253320425 is about 1078.1703202121.

Adding to 1253320425 its reverse (5240233521), we get a palindrome (6493553946).

The spelling of 1253320425 in words is "one billion, two hundred fifty-three million, three hundred twenty thousand, four hundred twenty-five".