25042245 has 16 divisors (see below), whose sum is σ = 40185600. Its totient is φ = 13316544.

The previous prime is 25042223. The next prime is 25042249. The reversal of 25042245 is 54224052.

It is a happy number.

It is not a de Polignac number, because 25042245 - 2²¹ = 22945093 is a prime.

It is a super-2 number, since 2×25042245² = 1254228069280050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231 + ... + 7779.

It is an arithmetic number, because the mean of its divisors is an integer number (2511600).

Almost surely, 2^25042245 is an apocalyptic number.

It is an amenable number.

25042245 is a deficient number, since it is larger than the sum of its proper divisors (15143355).

25042245 is a wasteful number, since it uses less digits than its factorization.

25042245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 25042245 is about 5004.2227168662. Note that the first 3 decimals coincide. The cubic root of 25042245 is about 292.5663813106.

Adding to 25042245 its reverse (54224052), we get a palindrome (79266297).

The spelling of 25042245 in words is "twenty-five million, forty-two thousand, two hundred forty-five".