1002725901 has 12 divisors (see below), whose sum is σ = 1482065728. Its totient is φ = 652937544.

The previous prime is 1002725813. The next prime is 1002725923. The reversal of 1002725901 is 1095272001.

1002725901 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 72 + 590 + 1 = 666.

It is not a de Polignac number, because 1002725901 - 2¹⁷ = 1002594829 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 (1002725951) 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, 1295125 + ... + 1295898.

Almost surely, 2^1002725901 is an apocalyptic number.

It is an amenable number.

1002725901 is a deficient number, since it is larger than the sum of its proper divisors (479339827).

1002725901 is a wasteful number, since it uses less digits than its factorization.

1002725901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591072 (or 2591069 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1002725901 is about 31665.8475490551. The cubic root of 1002725901 is about 1000.9078092996.

Adding to 1002725901 its reverse (1095272001), we get a palindrome (2097997902).

The spelling of 1002725901 in words is "one billion, two million, seven hundred twenty-five thousand, nine hundred one".