2549745026 has 4 divisors (see below), whose sum is σ = 3824617542. Its totient is φ = 1274872512.

The previous prime is 2549745019. The next prime is 2549745053. The reversal of 2549745026 is 6205479452.

It is a Cunningham number, because it is equal to 50495²+1.

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., 2549745025 + 1 = 50495^2 + 1^2 .

It is a super-2 number, since 2×2549745026² = 13002399395223481352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637436255 + ... + 637436258.

Almost surely, 2^2549745026 is an apocalyptic number.

2549745026 is a deficient number, since it is larger than the sum of its proper divisors (1274872516).

2549745026 is a wasteful number, since it uses less digits than its factorization.

2549745026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274872515.

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 2549745026 is about 50495.0000099020. Note that the first 5 decimals coincide. The cubic root of 2549745026 is about 1366.1516712658.

The spelling of 2549745026 in words is "two billion, five hundred forty-nine million, seven hundred forty-five thousand, twenty-six".