1225870503 has 16 divisors (see below), whose sum is σ = 1920245376. Its totient is φ = 685801440.

The previous prime is 1225870487. The next prime is 1225870559. The reversal of 1225870503 is 3050785221.

It is not a de Polignac number, because 1225870503 - 2⁴ = 1225870487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225870903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428325 + ... + 1429182.

It is an arithmetic number, because the mean of its divisors is an integer number (120015336).

Almost surely, 2^1225870503 is an apocalyptic number.

1225870503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1225870503 is a deficient number, since it is larger than the sum of its proper divisors (694374873).

1225870503 is a wasteful number, since it uses less digits than its factorization.

1225870503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857534.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 1225870503 is about 35012.4335486695. The cubic root of 1225870503 is about 1070.2408701624.

The spelling of 1225870503 in words is "one billion, two hundred twenty-five million, eight hundred seventy thousand, five hundred three".