255549949025 has 24 divisors (see below), whose sum is σ = 362181372480. Its totient is φ = 175219450560.

The previous prime is 255549949013. The next prime is 255549949043. The reversal of 255549949025 is 520949945552.

It is a happy number.

It is not a de Polignac number, because 255549949025 - 2⁸ = 255549948769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2266691 + ... + 2376759.

It is an arithmetic number, because the mean of its divisors is an integer number (15090890520).

Almost surely, 2^255549949025 is an apocalyptic number.

255549949025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255549949025 is a deficient number, since it is larger than the sum of its proper divisors (106631423455).

255549949025 is a wasteful number, since it uses less digits than its factorization.

255549949025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123353 (or 123348 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 59.

The spelling of 255549949025 in words is "two hundred fifty-five billion, five hundred forty-nine million, nine hundred forty-nine thousand, twenty-five".