255421254525 has 48 divisors (see below), whose sum is σ = 432542077440. Its totient is φ = 132925867200.

The previous prime is 255421254497. The next prime is 255421254547. The reversal of 255421254525 is 525452124552.

It is not a de Polignac number, because 255421254525 - 2¹⁶ = 255421188989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3286566 + ... + 3363384.

It is an arithmetic number, because the mean of its divisors is an integer number (9011293280).

Almost surely, 2^255421254525 is an apocalyptic number.

255421254525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255421254525 is a deficient number, since it is larger than the sum of its proper divisors (177120822915).

255421254525 is a wasteful number, since it uses less digits than its factorization.

255421254525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77906 (or 77901 counting only the distinct ones).

The product of its digits is 800000, while the sum is 42.

The spelling of 255421254525 in words is "two hundred fifty-five billion, four hundred twenty-one million, two hundred fifty-four thousand, five hundred twenty-five".