1611251125 has 48 divisors (see below), whose sum is σ = 2223853632. Its totient is φ = 1164636000.

The previous prime is 1611251111. The next prime is 1611251141. The reversal of 1611251125 is 5211521161.

It is not a de Polignac number, because 1611251125 - 2¹⁷ = 1611120053 is a prime.

It is a super-2 number, since 2×1611251125² = 5192260375627531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1611251125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4643202 + ... + 4643548.

It is an arithmetic number, because the mean of its divisors is an integer number (46330284).

Almost surely, 2^1611251125 is an apocalyptic number.

It is an amenable number.

1611251125 is a deficient number, since it is larger than the sum of its proper divisors (612602507).

1611251125 is a wasteful number, since it uses less digits than its factorization.

1611251125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 670 counting only the distinct ones).

The product of its digits is 600, while the sum is 25.

The square root of 1611251125 is about 40140.3926861709. The cubic root of 1611251125 is about 1172.3422349002.

Adding to 1611251125 its reverse (5211521161), we get a palindrome (6822772286).

The spelling of 1611251125 in words is "one billion, six hundred eleven million, two hundred fifty-one thousand, one hundred twenty-five".