1550135425 has 12 divisors (see below), whose sum is σ = 2023335280. Its totient is φ = 1174839120.

The previous prime is 1550135399. The next prime is 1550135449. The reversal of 1550135425 is 5245310551.

It is not a de Polignac number, because 1550135425 - 2²⁵ = 1516580993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1631247 + ... + 1632196.

Almost surely, 2^1550135425 is an apocalyptic number.

It is an amenable number.

1550135425 is a deficient number, since it is larger than the sum of its proper divisors (473199855).

1550135425 is a wasteful number, since it uses less digits than its factorization.

1550135425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263472 (or 3263467 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1550135425 is about 39371.7592317133. The cubic root of 1550135425 is about 1157.3282309290.

Adding to 1550135425 its reverse (5245310551), we get a palindrome (6795445976).

The spelling of 1550135425 in words is "one billion, five hundred fifty million, one hundred thirty-five thousand, four hundred twenty-five".