1253401401 has 32 divisors (see below), whose sum is σ = 1930346496. Its totient is φ = 708624000.

The previous prime is 1253401379. The next prime is 1253401417. The reversal of 1253401401 is 1041043521.

It is not a de Polignac number, because 1253401401 - 2⁶ = 1253401337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1253401451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845581 + ... + 847061.

It is an arithmetic number, because the mean of its divisors is an integer number (60323328).

Almost surely, 2^1253401401 is an apocalyptic number.

It is an amenable number.

1253401401 is a deficient number, since it is larger than the sum of its proper divisors (676945095).

1253401401 is a wasteful number, since it uses less digits than its factorization.

1253401401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1253401401 is about 35403.4094544579. The cubic root of 1253401401 is about 1078.1935396107.

Adding to 1253401401 its reverse (1041043521), we get a palindrome (2294444922).

The spelling of 1253401401 in words is "one billion, two hundred fifty-three million, four hundred one thousand, four hundred one".