255740625 has 96 divisors (see below), whose sum is σ = 542465280. Its totient is φ = 116640000.

The previous prime is 255740623. The next prime is 255740663. The reversal of 255740625 is 526047552.

255740625 is a `hidden beast` number, since 2 + 557 + 40 + 62 + 5 = 666.

It is not a de Polignac number, because 255740625 - 2¹ = 255740623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255740625.

It is not an unprimeable number, because it can be changed into a prime (255740623) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 590409 + ... + 590841.

It is an arithmetic number, because the mean of its divisors is an integer number (5650680).

Almost surely, 2^255740625 is an apocalyptic number.

255740625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255740625 is an abundant number, since it is smaller than the sum of its proper divisors (286724655).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255740625 is an frugal number, since it uses more digits than its factorization.

255740625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 255740625 is about 15991.8924771273. The cubic root of 255740625 is about 634.7459044958.

The spelling of 255740625 in words is "two hundred fifty-five million, seven hundred forty thousand, six hundred twenty-five".