25454430012 has 48 divisors (see below), whose sum is σ = 64807142400. Its totient is φ = 7711791360.

The previous prime is 25454430007. The next prime is 25454430013. The reversal of 25454430012 is 21003445452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25454430013) 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, 678564 + ... + 715092.

It is an arithmetic number, because the mean of its divisors is an integer number (1350148800).

Almost surely, 2^25454430012 is an apocalyptic number.

25454430012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25454430012 is an abundant number, since it is smaller than the sum of its proper divisors (39352712388).

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

25454430012 is a wasteful number, since it uses less digits than its factorization.

25454430012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41826 (or 41824 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 25454430012 its reverse (21003445452), we get a palindrome (46457875464).

The spelling of 25454430012 in words is "twenty-five billion, four hundred fifty-four million, four hundred thirty thousand, twelve".