1554453225 has 144 divisors (see below), whose sum is σ = 3253041792. Its totient is φ = 702535680.

The previous prime is 1554453223. The next prime is 1554453233. The reversal of 1554453225 is 5223544551.

It is not a de Polignac number, because 1554453225 - 2¹ = 1554453223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1554453225.

It is not an unprimeable number, because it can be changed into a prime (1554453221) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2137812 + ... + 2138538.

It is an arithmetic number, because the mean of its divisors is an integer number (22590568).

Almost surely, 2^1554453225 is an apocalyptic number.

1554453225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1554453225 is an abundant number, since it is smaller than the sum of its proper divisors (1698588567).

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

1554453225 is a wasteful number, since it uses less digits than its factorization.

1554453225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 808 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 1554453225 is about 39426.5548203238. The cubic root of 1554453225 is about 1158.4017885922.

Adding to 1554453225 its reverse (5223544551), we get a palindrome (6777997776).

The spelling of 1554453225 in words is "one billion, five hundred fifty-four million, four hundred fifty-three thousand, two hundred twenty-five".