255489430157 has 8 divisors (see below), whose sum is σ = 275438646840. Its totient is φ = 235582525440.

The previous prime is 255489430129. The next prime is 255489430169. The reversal of 255489430157 is 751034984552.

It can be written as a sum of positive squares in 4 ways, for example, as 155276521 + 255334153636 = 12461^2 + 505306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255489430157 - 2³² = 251194462861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255489430099 and 255489430108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255489430457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10565444 + ... + 10589597.

It is an arithmetic number, because the mean of its divisors is an integer number (34429830855).

Almost surely, 2^255489430157 is an apocalyptic number.

It is an amenable number.

255489430157 is a deficient number, since it is larger than the sum of its proper divisors (19949216683).

255489430157 is a wasteful number, since it uses less digits than its factorization.

255489430157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21155983.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 255489430157 in words is "two hundred fifty-five billion, four hundred eighty-nine million, four hundred thirty thousand, one hundred fifty-seven".