25012005 has 16 divisors (see below), whose sum is σ = 40410240. Its totient is φ = 13209408.

The previous prime is 25012003. The next prime is 25012019. The reversal of 25012005 is 50021052.

It is not a de Polignac number, because 25012005 - 2¹ = 25012003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012003) 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, 6550 + ... + 9639.

It is an arithmetic number, because the mean of its divisors is an integer number (2525640).

Almost surely, 2^25012005 is an apocalyptic number.

It is an amenable number.

25012005 is a deficient number, since it is larger than the sum of its proper divisors (15398235).

25012005 is a wasteful number, since it uses less digits than its factorization.

25012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16300.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 25012005 is about 5001.2003559146. The cubic root of 25012005 is about 292.4485701088.

Adding to 25012005 its reverse (50021052), we get a palindrome (75033057).

The spelling of 25012005 in words is "twenty-five million, twelve thousand, five".