25220323153 has 4 divisors (see below), whose sum is σ = 25835453028. Its totient is φ = 24605193280.

The previous prime is 25220323127. The next prime is 25220323169. The reversal of 25220323153 is 35132302252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1931426704 + 23288896449 = 43948^2 + 152607^2 .

It is a cyclic number.

It is not a de Polignac number, because 25220323153 - 2¹³ = 25220314961 is a prime.

It is a super-2 number, since 2×25220323153² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25220323103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307564876 + ... + 307564957.

It is an arithmetic number, because the mean of its divisors is an integer number (6458863257).

Almost surely, 2^25220323153 is an apocalyptic number.

It is an amenable number.

25220323153 is a deficient number, since it is larger than the sum of its proper divisors (615129875).

25220323153 is an equidigital number, since it uses as much as digits as its factorization.

25220323153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615129874.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 25220323153 in words is "twenty-five billion, two hundred twenty million, three hundred twenty-three thousand, one hundred fifty-three".