2549745025 has 9 divisors (see below), whose sum is σ = 3161996931. Its totient is φ = 2039594040.

The previous prime is 2549745019. The next prime is 2549745053. The reversal of 2549745025 is 5205479452.

The square root of 2549745025 is 50495.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 917908209 + 1631836816 = 30297^2 + 40396^2 .

It is not a de Polignac number, because 2549745025 - 2⁵ = 2549744993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 247426 + ... + 257524.

Almost surely, 2^2549745025 is an apocalyptic number.

2549745025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2549745025 is the 50495-th square number.

2549745025 is the 25248-th centered octagonal number.

It is an amenable number.

2549745025 is a deficient number, since it is larger than the sum of its proper divisors (612251906).

2549745025 is an frugal number, since it uses more digits than its factorization.

2549745025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20208 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The cubic root of 2549745025 is about 1366.1516710872.

The spelling of 2549745025 in words is "two billion, five hundred forty-nine million, seven hundred forty-five thousand, twenty-five".