1225203502 has 4 divisors (see below), whose sum is σ = 1837805256. Its totient is φ = 612601750.

The previous prime is 1225203487. The next prime is 1225203509. The reversal of 1225203502 is 2053025221.

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

It is a super-2 number, since 2×1225203502² = 3002247242626128008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225203509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306300874 + ... + 306300877.

It is an arithmetic number, because the mean of its divisors is an integer number (459451314).

Almost surely, 2^1225203502 is an apocalyptic number.

1225203502 is a deficient number, since it is larger than the sum of its proper divisors (612601754).

1225203502 is an equidigital number, since it uses as much as digits as its factorization.

1225203502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612601753.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1225203502 is about 35002.9070507008. The cubic root of 1225203502 is about 1070.0467275136.

Adding to 1225203502 its reverse (2053025221), we get a palindrome (3278228723).

The spelling of 1225203502 in words is "one billion, two hundred twenty-five million, two hundred three thousand, five hundred two".