1253562403 has 2 divisors, whose sum is σ = 1253562404. Its totient is φ = 1253562402.

The previous prime is 1253562397. The next prime is 1253562481. The reversal of 1253562403 is 3042653521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1253562403 - 2⁹ = 1253561891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253562103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626781201 + 626781202.

It is an arithmetic number, because the mean of its divisors is an integer number (626781202).

Almost surely, 2^1253562403 is an apocalyptic number.

1253562403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253562403 is an equidigital number, since it uses as much as digits as its factorization.

1253562403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1253562403 is about 35405.6832019946. The cubic root of 1253562403 is about 1078.2397030302.

The spelling of 1253562403 in words is "one billion, two hundred fifty-three million, five hundred sixty-two thousand, four hundred three".