245720025 has 18 divisors (see below), whose sum is σ = 440112270. Its totient is φ = 131050560.

The previous prime is 245719979. The next prime is 245720047. The reversal of 245720025 is 520027542.

245720025 is a `hidden beast` number, since 2 + 457 + 200 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 86657481 + 159062544 = 9309^2 + 12612^2 .

It is not a de Polignac number, because 245720025 - 2¹¹ = 245717977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 545820 + ... + 546269.

Almost surely, 2^245720025 is an apocalyptic number.

245720025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245720025 is a deficient number, since it is larger than the sum of its proper divisors (194392245).

245720025 is a wasteful number, since it uses less digits than its factorization.

245720025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092105 (or 1092097 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 245720025 is about 15675.4593234138. The cubic root of 245720025 is about 626.3448587589.

Adding to 245720025 its reverse (520027542), we get a palindrome (765747567).

The spelling of 245720025 in words is "two hundred forty-five million, seven hundred twenty thousand, twenty-five".