1225403545 has 16 divisors (see below), whose sum is σ = 1536071040. Its totient is φ = 936690304.

The previous prime is 1225403539. The next prime is 1225403549. The reversal of 1225403545 is 5453045221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225403545 is a prime.

It is a super-2 number, since 2×1225403545² = 3003227696197134050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225403549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111957 + ... + 122413.

It is an arithmetic number, because the mean of its divisors is an integer number (96004440).

Almost surely, 2^1225403545 is an apocalyptic number.

It is an amenable number.

1225403545 is a deficient number, since it is larger than the sum of its proper divisors (310667495).

1225403545 is a wasteful number, since it uses less digits than its factorization.

1225403545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11504.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 1225403545 is about 35005.7644538725. The cubic root of 1225403545 is about 1070.1049610257.

Adding to 1225403545 its reverse (5453045221), we get a palindrome (6678448766).

The spelling of 1225403545 in words is "one billion, two hundred twenty-five million, four hundred three thousand, five hundred forty-five".