1009091925 has 60 divisors (see below), whose sum is σ = 1874659776. Its totient is φ = 536608800.

The previous prime is 1009091911. The next prime is 1009091971. The reversal of 1009091925 is 5291909001.

It is not a de Polignac number, because 1009091925 - 2⁵ = 1009091893 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009091925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1107220 + ... + 1108130.

Almost surely, 2^1009091925 is an apocalyptic number.

1009091925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1009091925 is a deficient number, since it is larger than the sum of its proper divisors (865567851).

1009091925 is an equidigital number, since it uses as much as digits as its factorization.

1009091925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 1009091925 is about 31766.2072806937. The cubic root of 1009091925 is about 1003.0215029914.

The spelling of 1009091925 in words is "one billion, nine million, ninety-one thousand, nine hundred twenty-five".