255261630 has 64 divisors (see below), whose sum is σ = 698580288. Its totient is φ = 59136000.

The previous prime is 255261583. The next prime is 255261641. The reversal of 255261630 is 36162552.

255261630 = T₄₀₄ + T₄₀₅ + ... + T₁₁₆₈.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12621 + ... + 25880.

It is an arithmetic number, because the mean of its divisors is an integer number (10915317).

Almost surely, 2^255261630 is an apocalyptic number.

255261630 is an abundant number, since it is smaller than the sum of its proper divisors (443318658).

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

255261630 is a wasteful number, since it uses less digits than its factorization.

255261630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38541.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 255261630 is about 15976.9092755764. The cubic root of 255261630 is about 634.3493697492.

The spelling of 255261630 in words is "two hundred fifty-five million, two hundred sixty-one thousand, six hundred thirty".