1253389963401 has 9 divisors (see below), whose sum is σ = 1810457020749. Its totient is φ = 835591069836.

The previous prime is 1253389963379. The next prime is 1253389963411. The reversal of 1253389963401 is 1043699833521.

The square root of 1253389963401 is 1119549.

It is a perfect power (a square), and thus also a powerful number.

1253389963401 is a `hidden beast` number, since 1 + 2 + 533 + 8 + 9 + 9 + 63 + 40 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1253389963401 - 2⁵ = 1253389963369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253389963411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3172056 + ... + 3545238.

Almost surely, 2^{1253389963401} is an apocalyptic number.

1253389963401 is the 1119549-th square number.

1253389963401 is the 559775-th centered octagonal number.

It is an amenable number.

1253389963401 is a deficient number, since it is larger than the sum of its proper divisors (557067057348).

1253389963401 is an frugal number, since it uses more digits than its factorization.

1253389963401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746372 (or 373186 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 1253389963401 in words is "one trillion, two hundred fifty-three billion, three hundred eighty-nine million, nine hundred sixty-three thousand, four hundred one".