1002151125025 has 12 divisors (see below), whose sum is σ = 1242680427772. Its totient is φ = 801712491840.

The previous prime is 1002151124977. The next prime is 1002151125037. The reversal of 1002151125025 is 5205211512001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 41845202721 + 960305922304 = 204561^2 + 979952^2 .

It is not a de Polignac number, because 1002151125025 - 2¹³ = 1002151116833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3517207 + ... + 3791443.

Almost surely, 2^{1002151125025} is an apocalyptic number.

It is an amenable number.

1002151125025 is a deficient number, since it is larger than the sum of its proper divisors (240529302747).

1002151125025 is a wasteful number, since it uses less digits than its factorization.

1002151125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420420 (or 420415 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 1002151125025 its reverse (5205211512001), we get a palindrome (6207362637026).

The spelling of 1002151125025 in words is "one trillion, two billion, one hundred fifty-one million, one hundred twenty-five thousand, twenty-five".