1025121450 has 24 divisors (see below), whose sum is σ = 2542301568. Its totient is φ = 273365680.

The previous prime is 1025121413. The next prime is 1025121451. The reversal of 1025121450 is 541215201.

1025121450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1025121451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3416922 + ... + 3417221.

It is an arithmetic number, because the mean of its divisors is an integer number (105929232).

Almost surely, 2^1025121450 is an apocalyptic number.

1025121450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025121450 is an abundant number, since it is smaller than the sum of its proper divisors (1517180118).

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

1025121450 is a wasteful number, since it uses less digits than its factorization.

1025121450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834158 (or 6834153 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1025121450 is about 32017.5178613209. The cubic root of 1025121450 is about 1008.3046583988.

Adding to 1025121450 its reverse (541215201), we get a palindrome (1566336651).

The spelling of 1025121450 in words is "one billion, twenty-five million, one hundred twenty-one thousand, four hundred fifty".