1253401235 has 8 divisors (see below), whose sum is σ = 1510323936. Its totient is φ = 998559360.

The previous prime is 1253401223. The next prime is 1253401241. The reversal of 1253401235 is 5321043521.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1253401235 is a prime.

It is a Duffinian 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, 518879 + ... + 521288.

It is an arithmetic number, because the mean of its divisors is an integer number (188790492).

Almost surely, 2^1253401235 is an apocalyptic number.

1253401235 is a deficient number, since it is larger than the sum of its proper divisors (256922701).

1253401235 is a wasteful number, since it uses less digits than its factorization.

1253401235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040413.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1253401235 is about 35403.4071100509. The cubic root of 1253401235 is about 1078.1934920122.

Adding to 1253401235 its reverse (5321043521), we get a palindrome (6574444756).

The spelling of 1253401235 in words is "one billion, two hundred fifty-three million, four hundred one thousand, two hundred thirty-five".