2506409494 has 4 divisors (see below), whose sum is σ = 3759614244. Its totient is φ = 1253204746.

The previous prime is 2506409483. The next prime is 2506409509. The reversal of 2506409494 is 4949046052.

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

It is a super-2 number, since 2×2506409494² = 12564177103226672072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2506409494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626602372 + ... + 626602375.

It is an arithmetic number, because the mean of its divisors is an integer number (939903561).

Almost surely, 2^2506409494 is an apocalyptic number.

2506409494 is a deficient number, since it is larger than the sum of its proper divisors (1253204750).

2506409494 is a wasteful number, since it uses less digits than its factorization.

2506409494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253204749.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2506409494 is about 50064.0539109649. The cubic root of 2506409494 is about 1358.3676880451.

The spelling of 2506409494 in words is "two billion, five hundred six million, four hundred nine thousand, four hundred ninety-four".