1555133125 has 80 divisors (see below), whose sum is σ = 2459712640. Its totient is φ = 956448000.

The previous prime is 1555133119. The next prime is 1555133131. The reversal of 1555133125 is 5213315551.

It is an interprime number because it is at equal distance from previous prime (1555133119) and next prime (1555133131).

It is not a de Polignac number, because 1555133125 - 2³ = 1555133117 is a prime.

It is a super-3 number, since 3×1555133125³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2104006 + ... + 2104744.

It is an arithmetic number, because the mean of its divisors is an integer number (30746408).

Almost surely, 2^1555133125 is an apocalyptic number.

It is an amenable number.

1555133125 is a deficient number, since it is larger than the sum of its proper divisors (904579515).

1555133125 is an equidigital number, since it uses as much as digits as its factorization.

1555133125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 801 counting only the distinct ones).

The product of its digits is 11250, while the sum is 31.

The square root of 1555133125 is about 39435.1762389874. The cubic root of 1555133125 is about 1158.5706545236.

Adding to 1555133125 its reverse (5213315551), we get a palindrome (6768448676).

The spelling of 1555133125 in words is "one billion, five hundred fifty-five million, one hundred thirty-three thousand, one hundred twenty-five".