25270245 has 192 divisors, whose sum is σ = 64350720. Its totient is φ = 9123840.

The previous prime is 25270243. The next prime is 25270253. The reversal of 25270245 is 54207252.

It is not a de Polignac number, because 25270245 - 2¹ = 25270243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25270243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1486477 + ... + 1486493.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^25270245 is an apocalyptic number.

It is an amenable number.

25270245 is an abundant number, since it is smaller than the sum of its proper divisors (39080475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25270245 is a wasteful number, since it uses less digits than its factorization.

25270245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 56 counting only the distinct ones).

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

The square root of 25270245 is about 5026.9518597257. The cubic root of 25270245 is about 293.4516016149.

Adding to 25270245 its reverse (54207252), we get a palindrome (79477497).

The spelling of 25270245 in words is "twenty-five million, two hundred seventy thousand, two hundred forty-five".