25435154421412 has 6 divisors (see below), whose sum is σ = 44511520237478. Its totient is φ = 12717577210704.

The previous prime is 25435154421409. The next prime is 25435154421419. The reversal of 25435154421412 is 21412445153452.

It can be written as a sum of positive squares in only one way, i.e., 19678149232036 + 5757005189376 = 4436006^2 + 2399376^2 .

It is not an unprimeable number, because it can be changed into a prime (25435154421419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179394302673 + ... + 3179394302680.

Almost surely, 2^{25435154421412} is an apocalyptic number.

It is an amenable number.

25435154421412 is a deficient number, since it is larger than the sum of its proper divisors (19076365816066).

25435154421412 is a wasteful number, since it uses less digits than its factorization.

25435154421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358788605357 (or 6358788605355 counting only the distinct ones).

The product of its digits is 768000, while the sum is 43.

Adding to 25435154421412 its reverse (21412445153452), we get a palindrome (46847599574864).

The spelling of 25435154421412 in words is "twenty-five trillion, four hundred thirty-five billion, one hundred fifty-four million, four hundred twenty-one thousand, four hundred twelve".