1225501416 has 96 divisors (see below), whose sum is σ = 3369562560. Its totient is φ = 402333696.

The previous prime is 1225501411. The next prime is 1225501421. The reversal of 1225501416 is 6141055221.

It is an interprime number because it is at equal distance from previous prime (1225501411) and next prime (1225501421).

It is a self number, because there is not a number n which added to its sum of digits gives 1225501416.

It is not an unprimeable number, because it can be changed into a prime (1225501411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1905591 + ... + 1906233.

It is an arithmetic number, because the mean of its divisors is an integer number (35099610).

Almost surely, 2^1225501416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225501416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684781280).

1225501416 is an abundant number, since it is smaller than the sum of its proper divisors (2144061144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225501416 is a wasteful number, since it uses less digits than its factorization.

1225501416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1225501416 is about 35007.1623528672. The cubic root of 1225501416 is about 1070.1334494516.

Adding to 1225501416 its reverse (6141055221), we get a palindrome (7366556637).

The spelling of 1225501416 in words is "one billion, two hundred twenty-five million, five hundred one thousand, four hundred sixteen".