1002925561 has 9 divisors (see below), whose sum is σ = 1102772293. Its totient is φ = 911433820.

The previous prime is 1002925543. The next prime is 1002925571. The reversal of 1002925561 is 1655292001.

The square root of 1002925561 is 31669.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1002925561 - 2¹⁷ = 1002794489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002925501) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 346920 + ... + 349798.

Almost surely, 2^1002925561 is an apocalyptic number.

1002925561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002925561 is the 31669-th square number.

1002925561 is the 15835-th centered octagonal number.

It is an amenable number.

1002925561 is a deficient number, since it is larger than the sum of its proper divisors (99846732).

1002925561 is an frugal number, since it uses more digits than its factorization.

1002925561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5780 (or 2890 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The cubic root of 1002925561 is about 1000.9742375530.

The spelling of 1002925561 in words is "one billion, two million, nine hundred twenty-five thousand, five hundred sixty-one".