1551265125 has 16 divisors (see below), whose sum is σ = 2581305792. Its totient is φ = 827341200.

The previous prime is 1551265117. The next prime is 1551265139. The reversal of 1551265125 is 5215621551.

It is not a de Polignac number, because 1551265125 - 2³ = 1551265117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2067979 + ... + 2068728.

It is an arithmetic number, because the mean of its divisors is an integer number (161331612).

Almost surely, 2^1551265125 is an apocalyptic number.

1551265125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1551265125 is a deficient number, since it is larger than the sum of its proper divisors (1030040667).

1551265125 is an equidigital number, since it uses as much as digits as its factorization.

1551265125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136725 (or 4136715 counting only the distinct ones).

The product of its digits is 15000, while the sum is 33.

The square root of 1551265125 is about 39386.1031964321. The cubic root of 1551265125 is about 1157.6093066341.

Adding to 1551265125 its reverse (5215621551), we get a palindrome (6766886676).

The spelling of 1551265125 in words is "one billion, five hundred fifty-one million, two hundred sixty-five thousand, one hundred twenty-five".