255562642 has 4 divisors (see below), whose sum is σ = 383343966. Its totient is φ = 127781320.

The previous prime is 255562639. The next prime is 255562691. The reversal of 255562642 is 246265552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 177928921 + 77633721 = 13339^2 + 8811^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63890659 + ... + 63890662.

Almost surely, 2^255562642 is an apocalyptic number.

255562642 is a deficient number, since it is larger than the sum of its proper divisors (127781324).

255562642 is a wasteful number, since it uses less digits than its factorization.

255562642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127781323.

The product of its digits is 144000, while the sum is 37.

The square root of 255562642 is about 15986.3267200442. The cubic root of 255562642 is about 634.5986195939.

The spelling of 255562642 in words is "two hundred fifty-five million, five hundred sixty-two thousand, six hundred forty-two".