1002501125 has 16 divisors (see below), whose sum is σ = 1284941424. Its totient is φ = 780321600.

The previous prime is 1002501121. The next prime is 1002501133. The reversal of 1002501125 is 5211052001.

It can be written as a sum of positive squares in 8 ways, for example, as 385376161 + 617124964 = 19631^2 + 24842^2 .

It is not a de Polignac number, because 1002501125 - 2² = 1002501121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002501121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103754 + ... + 113003.

It is an arithmetic number, because the mean of its divisors is an integer number (80308839).

Almost surely, 2^1002501125 is an apocalyptic number.

It is an amenable number.

1002501125 is a deficient number, since it is larger than the sum of its proper divisors (282440299).

1002501125 is an equidigital number, since it uses as much as digits as its factorization.

1002501125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216809 (or 216799 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1002501125 is about 31662.2981635888. The cubic root of 1002501125 is about 1000.8330142279.

Adding to 1002501125 its reverse (5211052001), we get a palindrome (6213553126).

The spelling of 1002501125 in words is "one billion, two million, five hundred one thousand, one hundred twenty-five".