25057225 has 6 divisors (see below), whose sum is σ = 31070990. Its totient is φ = 20045760.

The previous prime is 25057223. The next prime is 25057231. The reversal of 25057225 is 52275052.

It can be written as a sum of positive squares in 3 ways, for example, as 5934096 + 19123129 = 2436^2 + 4373^2 .

It is not a de Polignac number, because 25057225 - 2¹ = 25057223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25057193 and 25057202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25057223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501120 + ... + 501169.

Almost surely, 2^25057225 is an apocalyptic number.

25057225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25057225 is a deficient number, since it is larger than the sum of its proper divisors (6013765).

25057225 is a wasteful number, since it uses less digits than its factorization.

25057225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002299 (or 1002294 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 25057225 is about 5005.7192290419. The cubic root of 25057225 is about 292.6247063636.

It can be divided in two parts, 2505 and 7225, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 25057225 in words is "twenty-five million, fifty-seven thousand, two hundred twenty-five".