25009245 has 12 divisors (see below), whose sum is σ = 43349436. Its totient is φ = 13338240.

The previous prime is 25009241. The next prime is 25009249. The reversal of 25009245 is 54290052.

It is an interprime number because it is at equal distance from previous prime (25009241) and next prime (25009249).

It can be written as a sum of positive squares in 2 ways, for example, as 8191044 + 16818201 = 2862^2 + 4101^2 .

It is not a de Polignac number, because 25009245 - 2² = 25009241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25009241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277836 + ... + 277925.

It is an arithmetic number, because the mean of its divisors is an integer number (3612453).

Almost surely, 2^25009245 is an apocalyptic number.

It is an amenable number.

25009245 is a deficient number, since it is larger than the sum of its proper divisors (18340191).

25009245 is a wasteful number, since it uses less digits than its factorization.

25009245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555772 (or 555769 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25009245 is about 5000.9244145458. The cubic root of 25009245 is about 292.4378127712.

Adding to 25009245 its reverse (54290052), we get a palindrome (79299297).

The spelling of 25009245 in words is "twenty-five million, nine thousand, two hundred forty-five".