1253428465 has 16 divisors (see below), whose sum is σ = 1547481600. Its totient is φ = 973926720.

The previous prime is 1253428453. The next prime is 1253428541. The reversal of 1253428465 is 5648243521.

It is not a de Polignac number, because 1253428465 - 2¹¹ = 1253426417 is a prime.

It is a super-3 number, since 3×1253428465³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105160 + ... + 116470.

It is an arithmetic number, because the mean of its divisors is an integer number (96717600).

Almost surely, 2^1253428465 is an apocalyptic number.

It is an amenable number.

1253428465 is a deficient number, since it is larger than the sum of its proper divisors (294053135).

1253428465 is a wasteful number, since it uses less digits than its factorization.

1253428465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11952.

The product of its digits is 230400, while the sum is 40.

The square root of 1253428465 is about 35403.7916754689. The cubic root of 1253428465 is about 1078.2012998329.

The spelling of 1253428465 in words is "one billion, two hundred fifty-three million, four hundred twenty-eight thousand, four hundred sixty-five".