25500810450 has 48 divisors (see below), whose sum is σ = 63251817696. Its totient is φ = 6799161600.

The previous prime is 25500810443. The next prime is 25500810463. The reversal of 25500810450 is 5401800552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1678890 + ... + 1694010.

It is an arithmetic number, because the mean of its divisors is an integer number (1317746202).

Almost surely, 2^25500810450 is an apocalyptic number.

25500810450 is an abundant number, since it is smaller than the sum of its proper divisors (37751007246).

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

25500810450 is a wasteful number, since it uses less digits than its factorization.

25500810450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26379 (or 26374 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 25500810450 in words is "twenty-five billion, five hundred million, eight hundred ten thousand, four hundred fifty".