1009925291 has 2 divisors, whose sum is σ = 1009925292. Its totient is φ = 1009925290.

The previous prime is 1009925269. The next prime is 1009925321. The reversal of 1009925291 is 1925299001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1009925291 - 2⁶ = 1009925227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1009925251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504962645 + 504962646.

It is an arithmetic number, because the mean of its divisors is an integer number (504962646).

Almost surely, 2^1009925291 is an apocalyptic number.

1009925291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009925291 is an equidigital number, since it uses as much as digits as its factorization.

1009925291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 1009925291 is about 31779.3217517303. The cubic root of 1009925291 is about 1003.2975445808.

The spelling of 1009925291 in words is "one billion, nine million, nine hundred twenty-five thousand, two hundred ninety-one".