25451351212 has 24 divisors (see below), whose sum is σ = 50956849440. Its totient is φ = 10896119040.

The previous prime is 25451351203. The next prime is 25451351213. The reversal of 25451351212 is 21215315452.

It is not an unprimeable number, because it can be changed into a prime (25451351213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456637 + ... + 509332.

It is an arithmetic number, because the mean of its divisors is an integer number (2123202060).

Almost surely, 2^25451351212 is an apocalyptic number.

It is an amenable number.

25451351212 is an abundant number, since it is smaller than the sum of its proper divisors (25505498228).

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

25451351212 is a wasteful number, since it uses less digits than its factorization.

25451351212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966921 (or 966919 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 25451351212 its reverse (21215315452), we get a palindrome (46666666664).

The spelling of 25451351212 in words is "twenty-five billion, four hundred fifty-one million, three hundred fifty-one thousand, two hundred twelve".