25203155412 has 24 divisors (see below), whose sum is σ = 58813263936. Its totient is φ = 8400208768.

The previous prime is 25203155407. The next prime is 25203155413. The reversal of 25203155412 is 21455130252.

It is a self number, because there is not a number n which added to its sum of digits gives 25203155412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25203155413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25708 + ... + 225980.

It is an arithmetic number, because the mean of its divisors is an integer number (2450552664).

Almost surely, 2^25203155412 is an apocalyptic number.

It is an amenable number.

25203155412 is an abundant number, since it is smaller than the sum of its proper divisors (33610108524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25203155412 is a wasteful number, since it uses less digits than its factorization.

25203155412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210767 (or 210765 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 25203155412 its reverse (21455130252), we get a palindrome (46658285664).

The spelling of 25203155412 in words is "twenty-five billion, two hundred three million, one hundred fifty-five thousand, four hundred twelve".