1253050405 has 8 divisors (see below), whose sum is σ = 1540335384. Its totient is φ = 977990400.

The previous prime is 1253050321. The next prime is 1253050427. The reversal of 1253050405 is 5040503521.

It can be written as a sum of positive squares in 4 ways, for example, as 36505764 + 1216544641 = 6042^2 + 34879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253050405 - 2¹⁷ = 1252919333 is a prime.

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 1253050405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056016 + ... + 3056425.

It is an arithmetic number, because the mean of its divisors is an integer number (192541923).

Almost surely, 2^1253050405 is an apocalyptic number.

It is an amenable number.

1253050405 is a deficient number, since it is larger than the sum of its proper divisors (287284979).

1253050405 is an equidigital number, since it uses as much as digits as its factorization.

1253050405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112487.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1253050405 is about 35398.4520141771. The cubic root of 1253050405 is about 1078.0928863136.

Adding to 1253050405 its reverse (5040503521), we get a palindrome (6293553926).

The spelling of 1253050405 in words is "one billion, two hundred fifty-three million, fifty thousand, four hundred five".