1225444245 has 8 divisors (see below), whose sum is σ = 1960710816. Its totient is φ = 653570256.

The previous prime is 1225444243. The next prime is 1225444247. The reversal of 1225444245 is 5424445221.

It is an interprime number because it is at equal distance from previous prime (1225444243) and next prime (1225444247).

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

It is not a de Polignac number, because 1225444245 - 2¹ = 1225444243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225444243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40848127 + ... + 40848156.

It is an arithmetic number, because the mean of its divisors is an integer number (245088852).

Almost surely, 2^1225444245 is an apocalyptic number.

1225444245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225444245 is a deficient number, since it is larger than the sum of its proper divisors (735266571).

1225444245 is an equidigital number, since it uses as much as digits as its factorization.

1225444245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81696291.

The product of its digits is 51200, while the sum is 33.

The square root of 1225444245 is about 35006.3457818722. The cubic root of 1225444245 is about 1070.1168082222.

Adding to 1225444245 its reverse (5424445221), we get a palindrome (6649889466).

The spelling of 1225444245 in words is "one billion, two hundred twenty-five million, four hundred forty-four thousand, two hundred forty-five".