1025197829 has 4 divisors (see below), whose sum is σ = 1025998176. Its totient is φ = 1024397484.

The previous prime is 1025197819. The next prime is 1025197861. The reversal of 1025197829 is 9287915201.

It is a happy number.

1025197829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025197829 - 2²⁰ = 1024149253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025197829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025197819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398249 + ... + 400814.

It is an arithmetic number, because the mean of its divisors is an integer number (256499544).

Almost surely, 2^1025197829 is an apocalyptic number.

It is an amenable number.

1025197829 is a deficient number, since it is larger than the sum of its proper divisors (800347).

1025197829 is an equidigital number, since it uses as much as digits as its factorization.

1025197829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800346.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1025197829 is about 32018.7106080179. The cubic root of 1025197829 is about 1008.3296997858.

The spelling of 1025197829 in words is "one billion, twenty-five million, one hundred ninety-seven thousand, eight hundred twenty-nine".