1425510450121 has 4 divisors (see below), whose sum is σ = 1435077634500. Its totient is φ = 1415943265744.

The previous prime is 1425510450109. The next prime is 1425510450137. The reversal of 1425510450121 is 1210540155241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 948167640121 + 477342810000 = 973739^2 + 690900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425510450121 - 2²⁹ = 1424973579209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425510453121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783591966 + ... + 4783592263.

It is an arithmetic number, because the mean of its divisors is an integer number (358769408625).

Almost surely, 2^{1425510450121} is an apocalyptic number.

It is an amenable number.

1425510450121 is a deficient number, since it is larger than the sum of its proper divisors (9567184379).

1425510450121 is an equidigital number, since it uses as much as digits as its factorization.

1425510450121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9567184378.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 1425510450121 in words is "one trillion, four hundred twenty-five billion, five hundred ten million, four hundred fifty thousand, one hundred twenty-one".