25021454012 has 24 divisors (see below), whose sum is σ = 46998405216. Its totient is φ = 11613500928.

The previous prime is 25021454009. The next prime is 25021454023. The reversal of 25021454012 is 21045412052.

It is a super-2 number, since 2×25021454012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515328 + ... + 2525255.

It is an arithmetic number, because the mean of its divisors is an integer number (1958266884).

Almost surely, 2^25021454012 is an apocalyptic number.

It is an amenable number.

25021454012 is a deficient number, since it is larger than the sum of its proper divisors (21976951204).

25021454012 is a wasteful number, since it uses less digits than its factorization.

25021454012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040677 (or 5040675 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 25021454012 its reverse (21045412052), we get a palindrome (46066866064).

The spelling of 25021454012 in words is "twenty-five billion, twenty-one million, four hundred fifty-four thousand, twelve".