253400404251 has 16 divisors (see below), whose sum is σ = 345756118400. Its totient is φ = 164989863360.

The previous prime is 253400404199. The next prime is 253400404267. The reversal of 253400404251 is 152404004352.

It is a de Polignac number, because none of the positive numbers 2^k-253400404251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253400404151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429575 + ... + 1597023.

It is an arithmetic number, because the mean of its divisors is an integer number (21609757400).

Almost surely, 2^253400404251 is an apocalyptic number.

253400404251 is a deficient number, since it is larger than the sum of its proper divisors (92355714149).

253400404251 is a wasteful number, since it uses less digits than its factorization.

253400404251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179226.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 253400404251 in words is "two hundred fifty-three billion, four hundred million, four hundred four thousand, two hundred fifty-one".