2506505402 has 4 divisors (see below), whose sum is σ = 3759758106. Its totient is φ = 1253252700.

The previous prime is 2506505383. The next prime is 2506505411. The reversal of 2506505402 is 2045056052.

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., 1867881961 + 638623441 = 43219^2 + 25271^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626626349 + ... + 626626352.

Almost surely, 2^2506505402 is an apocalyptic number.

2506505402 is a deficient number, since it is larger than the sum of its proper divisors (1253252704).

2506505402 is a wasteful number, since it uses less digits than its factorization.

2506505402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253252703.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2506505402 is about 50065.0117547175. The cubic root of 2506505402 is about 1358.3850138474.

The spelling of 2506505402 in words is "two billion, five hundred six million, five hundred five thousand, four hundred two".