25155104212 has 12 divisors (see below), whose sum is σ = 50310208480. Its totient is φ = 10780758936.

The previous prime is 25155104203. The next prime is 25155104213. The reversal of 25155104212 is 21240155152.

25155104212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 898396579 = 25155104212 / (2 + 5 + 1 + 5 + 5 + 1 + 0 + 4 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25155104213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449198262 + ... + 449198317.

Almost surely, 2^25155104212 is an apocalyptic number.

It is an amenable number.

25155104212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25155104212 is a wasteful number, since it uses less digits than its factorization.

25155104212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898396590 (or 898396588 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 25155104212 its reverse (21240155152), we get a palindrome (46395259364).

The spelling of 25155104212 in words is "twenty-five billion, one hundred fifty-five million, one hundred four thousand, two hundred twelve".