25000245 has 20 divisors (see below), whose sum is σ = 44815980. Its totient is φ = 13333248.

The previous prime is 25000231. The next prime is 25000267. The reversal of 25000245 is 54200052.

It can be written as a sum of positive squares in 2 ways, for example, as 18740241 + 6260004 = 4329^2 + 2502^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25000245 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30460 + ... + 31269.

It is an arithmetic number, because the mean of its divisors is an integer number (2240799).

Almost surely, 2^25000245 is an apocalyptic number.

It is an amenable number.

25000245 is a deficient number, since it is larger than the sum of its proper divisors (19815735).

25000245 is an equidigital number, since it uses as much as digits as its factorization.

25000245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61746 (or 61737 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 25000245 is about 5000.0244999400. The cubic root of 25000245 is about 292.4027289973.

Adding to 25000245 its reverse (54200052), we get a palindrome (79200297).

It can be divided in two parts, 250002 and 45, that added together give a cube (250047 = 63³).

The spelling of 25000245 in words is "twenty-five million, two hundred forty-five", and thus it is an aban number.