253221542325 has 72 divisors (see below), whose sum is σ = 481026474240. Its totient is φ = 127061827200.

The previous prime is 253221542303. The next prime is 253221542383. The reversal of 253221542325 is 523245122352.

It is a happy number.

253221542325 is a `hidden beast` number, since 2 + 5 + 3 + 221 + 5 + 423 + 2 + 5 = 666.

It is not a de Polignac number, because 253221542325 - 2⁶ = 253221542261 is a prime.

It is a super-2 number, since 2×253221542325² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253221542325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 85405 + ... + 716754.

Almost surely, 2^253221542325 is an apocalyptic number.

253221542325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253221542325 is a deficient number, since it is larger than the sum of its proper divisors (227804931915).

253221542325 is a wasteful number, since it uses less digits than its factorization.

253221542325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802259 (or 802251 counting only the distinct ones).

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

Adding to 253221542325 its reverse (523245122352), we get a palindrome (776466664677).

The spelling of 253221542325 in words is "two hundred fifty-three billion, two hundred twenty-one million, five hundred forty-two thousand, three hundred twenty-five".