10203112825 has 6 divisors (see below), whose sum is σ = 12651859934. Its totient is φ = 8162490240.

The previous prime is 10203112811. The next prime is 10203112883. The reversal of 10203112825 is 52821130201.

It can be written as a sum of positive squares in 3 ways, for example, as 3728761 + 10199384064 = 1931^2 + 100992^2 .

It is not a de Polignac number, because 10203112825 - 2⁷ = 10203112697 is a prime.

It is a super-2 number, since 2×10203112825² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 408124513 = 10203112825 / (1 + 0 + 2 + 0 + 3 + 1 + 1 + 2 + 8 + 2 + 5).

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 10203112825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204062232 + ... + 204062281.

Almost surely, 2^10203112825 is an apocalyptic number.

It is an amenable number.

10203112825 is a deficient number, since it is larger than the sum of its proper divisors (2448747109).

10203112825 is an equidigital number, since it uses as much as digits as its factorization.

10203112825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408124523 (or 408124518 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The spelling of 10203112825 in words is "ten billion, two hundred three million, one hundred twelve thousand, eight hundred twenty-five".