253401325524 has 18 divisors (see below), whose sum is σ = 640542239610. Its totient is φ = 84467108496.

The previous prime is 253401325493. The next prime is 253401325531. The reversal of 253401325524 is 425523104352.

253401325524 is a `hidden beast` number, since 2 + 53 + 40 + 13 + 2 + 552 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 239032988100 + 14368337424 = 488910^2 + 119868^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7038925709 = 253401325524 / (2 + 5 + 3 + 4 + 0 + 1 + 3 + 2 + 5 + 5 + 2 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3519462819 + ... + 3519462890.

Almost surely, 2^253401325524 is an apocalyptic number.

It is an amenable number.

253401325524 is an abundant number, since it is smaller than the sum of its proper divisors (387140914086).

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

253401325524 is a wasteful number, since it uses less digits than its factorization.

253401325524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038925719 (or 7038925714 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 253401325524 its reverse (425523104352), we get a palindrome (678924429876).

The spelling of 253401325524 in words is "two hundred fifty-three billion, four hundred one million, three hundred twenty-five thousand, five hundred twenty-four".