253203785274 has 64 divisors (see below), whose sum is σ = 563463936000. Its totient is φ = 75211943040.

The previous prime is 253203785269. The next prime is 253203785297. The reversal of 253203785274 is 472587302352.

It is a super-2 number, since 2×253203785274² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550062 + ... + 899430.

It is an arithmetic number, because the mean of its divisors is an integer number (8804124000).

Almost surely, 2^253203785274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253203785274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281731968000).

253203785274 is an abundant number, since it is smaller than the sum of its proper divisors (310260150726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253203785274 is a wasteful number, since it uses less digits than its factorization.

253203785274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349603.

The product of its (nonzero) digits is 2822400, while the sum is 48.

The spelling of 253203785274 in words is "two hundred fifty-three billion, two hundred three million, seven hundred eighty-five thousand, two hundred seventy-four".