25404424212 has 48 divisors (see below), whose sum is σ = 61366032000. Its totient is φ = 8170135680.

The previous prime is 25404424153. The next prime is 25404424217. The reversal of 25404424212 is 21242440452.

It is a self number, because there is not a number n which added to its sum of digits gives 25404424212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404424217) 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, 460762 + ... + 512942.

It is an arithmetic number, because the mean of its divisors is an integer number (1278459000).

Almost surely, 2^25404424212 is an apocalyptic number.

It is an amenable number.

25404424212 is an abundant number, since it is smaller than the sum of its proper divisors (35961607788).

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

25404424212 is a wasteful number, since it uses less digits than its factorization.

25404424212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53616 (or 53614 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 25404424212 its reverse (21242440452), we get a palindrome (46646864664).

The spelling of 25404424212 in words is "twenty-five billion, four hundred four million, four hundred twenty-four thousand, two hundred twelve".