1538275425 has 12 divisors (see below), whose sum is σ = 2543282160. Its totient is φ = 820413520.

The previous prime is 1538275399. The next prime is 1538275429. The reversal of 1538275425 is 5245728351.

It is not a de Polignac number, because 1538275425 - 2⁵ = 1538275393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1538275429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10255095 + ... + 10255244.

It is an arithmetic number, because the mean of its divisors is an integer number (211940180).

Almost surely, 2^1538275425 is an apocalyptic number.

1538275425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1538275425 is a deficient number, since it is larger than the sum of its proper divisors (1005006735).

1538275425 is a wasteful number, since it uses less digits than its factorization.

1538275425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20510352 (or 20510347 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 1538275425 is about 39220.8544654499. The cubic root of 1538275425 is about 1154.3691200560.

The spelling of 1538275425 in words is "one billion, five hundred thirty-eight million, two hundred seventy-five thousand, four hundred twenty-five".