1553140225 has 24 divisors (see below), whose sum is σ = 2370334400. Its totient is φ = 983085120.

The previous prime is 1553140223. The next prime is 1553140283. The reversal of 1553140225 is 5220413551.

It is not a de Polignac number, because 1553140225 - 2¹ = 1553140223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1553140193 and 1553140202.

It is not an unprimeable number, because it can be changed into a prime (1553140223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339075 + ... + 343624.

Almost surely, 2^1553140225 is an apocalyptic number.

It is an amenable number.

1553140225 is a deficient number, since it is larger than the sum of its proper divisors (817194175).

1553140225 is a wasteful number, since it uses less digits than its factorization.

1553140225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682729 (or 682724 counting only the distinct ones).

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

The square root of 1553140225 is about 39409.9000886833. The cubic root of 1553140225 is about 1158.0755409729.

Adding to 1553140225 its reverse (5220413551), we get a palindrome (6773553776).

It can be divided in two parts, 1553 and 140225, that added together give a triangular number (141778 = T₅₃₂).

The spelling of 1553140225 in words is "one billion, five hundred fifty-three million, one hundred forty thousand, two hundred twenty-five".