253535231025 has 18 divisors (see below), whose sum is σ = 454109769750. Its totient is φ = 135218789760.

The previous prime is 253535231003. The next prime is 253535231069. The reversal of 253535231025 is 520132535352.

253535231025 is a `hidden beast` number, since 2 + 53 + 53 + 523 + 10 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 4166831601 + 249368399424 = 64551^2 + 499368^2 .

It is not a de Polignac number, because 253535231025 - 2¹⁰ = 253535230001 is a prime.

It is a super-2 number, since 2×253535231025² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 563411400 + ... + 563411849.

Almost surely, 2^253535231025 is an apocalyptic number.

253535231025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253535231025 is a deficient number, since it is larger than the sum of its proper divisors (200574538725).

253535231025 is a wasteful number, since it uses less digits than its factorization.

253535231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126823265 (or 1126823257 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

Adding to 253535231025 its reverse (520132535352), we get a palindrome (773667766377).

The spelling of 253535231025 in words is "two hundred fifty-three billion, five hundred thirty-five million, two hundred thirty-one thousand, twenty-five".