25001024225 has 12 divisors (see below), whose sum is σ = 31008062976. Its totient is φ = 19996436880.

The previous prime is 25001024183. The next prime is 25001024231. The reversal of 25001024225 is 52242010052.

It is not a de Polignac number, because 25001024225 - 2⁸ = 25001023969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25001024225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9344 + ... + 223806.

It is an arithmetic number, because the mean of its divisors is an integer number (2584005248).

Almost surely, 2^25001024225 is an apocalyptic number.

25001024225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25001024225 is a deficient number, since it is larger than the sum of its proper divisors (6007038751).

25001024225 is a wasteful number, since it uses less digits than its factorization.

25001024225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219136 (or 219131 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 25001024225 its reverse (52242010052), we get a palindrome (77243034277).

The spelling of 25001024225 in words is "twenty-five billion, one million, twenty-four thousand, two hundred twenty-five".