25419454212 has 48 divisors (see below), whose sum is σ = 61056882432. Its totient is φ = 8224957440.

The previous prime is 25419454199. The next prime is 25419454259. The reversal of 25419454212 is 21245491452.

It is a happy number.

It is a super-2 number, since 2×25419454212² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 124948 + ... + 257780.

It is an arithmetic number, because the mean of its divisors is an integer number (1272018384).

Almost surely, 2^25419454212 is an apocalyptic number.

It is an amenable number.

25419454212 is an abundant number, since it is smaller than the sum of its proper divisors (35637428220).

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

25419454212 is a wasteful number, since it uses less digits than its factorization.

25419454212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133308 (or 133306 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The spelling of 25419454212 in words is "twenty-five billion, four hundred nineteen million, four hundred fifty-four thousand, two hundred twelve".