1553622425 has 6 divisors (see below), whose sum is σ = 1926491838. Its totient is φ = 1242897920.

The previous prime is 1553622409. The next prime is 1553622437. The reversal of 1553622425 is 5242263551.

It can be written as a sum of positive squares in 3 ways, for example, as 1369 + 1553621056 = 37^2 + 39416^2 .

It is not a de Polignac number, because 1553622425 - 2⁴ = 1553622409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31072424 + ... + 31072473.

It is an arithmetic number, because the mean of its divisors is an integer number (321081973).

Almost surely, 2^1553622425 is an apocalyptic number.

It is an amenable number.

1553622425 is a deficient number, since it is larger than the sum of its proper divisors (372869413).

1553622425 is an equidigital number, since it uses as much as digits as its factorization.

1553622425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62144907 (or 62144902 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 1553622425 is about 39416.0173660404. The cubic root of 1553622425 is about 1158.1953769533.

Adding to 1553622425 its reverse (5242263551), we get a palindrome (6795885976).

The spelling of 1553622425 in words is "one billion, five hundred fifty-three million, six hundred twenty-two thousand, four hundred twenty-five".