155244525641 has 4 divisors (see below), whose sum is σ = 155496138132. Its totient is φ = 154992913152.

The previous prime is 155244525607. The next prime is 155244525647. The reversal of 155244525641 is 146525442551.

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 46040714041 + 109203811600 = 214571^2 + 330460^2 .

It is a cyclic number.

It is not a de Polignac number, because 155244525641 - 2⁶ = 155244525577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155244525592 and 155244525601.

It is not an unprimeable number, because it can be changed into a prime (155244525647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125805320 + ... + 125806553.

It is an arithmetic number, because the mean of its divisors is an integer number (38874034533).

Almost surely, 2^155244525641 is an apocalyptic number.

It is an amenable number.

155244525641 is a deficient number, since it is larger than the sum of its proper divisors (251612491).

155244525641 is an equidigital number, since it uses as much as digits as its factorization.

155244525641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251612490.

The product of its digits is 960000, while the sum is 44.

The spelling of 155244525641 in words is "one hundred fifty-five billion, two hundred forty-four million, five hundred twenty-five thousand, six hundred forty-one".