1225145003 has 4 divisors (see below), whose sum is σ = 1229084688. Its totient is φ = 1221205320.

The previous prime is 1225144981. The next prime is 1225145011. The reversal of 1225145003 is 3005415221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225145003 - 2³⁰ = 151403179 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 1225145003.

It is not an unprimeable number, because it can be changed into a prime (1225145063) 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, 1969376 + ... + 1969997.

It is an arithmetic number, because the mean of its divisors is an integer number (307271172).

Almost surely, 2^1225145003 is an apocalyptic number.

1225145003 is a deficient number, since it is larger than the sum of its proper divisors (3939685).

1225145003 is an equidigital number, since it uses as much as digits as its factorization.

1225145003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939684.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1225145003 is about 35002.0714101323. The cubic root of 1225145003 is about 1070.0296969660.

The spelling of 1225145003 in words is "one billion, two hundred twenty-five million, one hundred forty-five thousand, three".