1225212355 has 8 divisors (see below), whose sum is σ = 1556740512. Its totient is φ = 922512768.

The previous prime is 1225212341. The next prime is 1225212377. The reversal of 1225212355 is 5532125221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225212355 - 2⁷ = 1225212227 is a prime.

It is a super-2 number, since 2×1225212355² = 3002290629689292050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7207047 + ... + 7207216.

It is an arithmetic number, because the mean of its divisors is an integer number (194592564).

Almost surely, 2^1225212355 is an apocalyptic number.

1225212355 is a deficient number, since it is larger than the sum of its proper divisors (331528157).

1225212355 is a wasteful number, since it uses less digits than its factorization.

1225212355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414285.

The product of its digits is 6000, while the sum is 28.

The square root of 1225212355 is about 35003.0335113973. The cubic root of 1225212355 is about 1070.0493048000.

Adding to 1225212355 its reverse (5532125221), we get a palindrome (6757337576).

The spelling of 1225212355 in words is "one billion, two hundred twenty-five million, two hundred twelve thousand, three hundred fifty-five".