1625161132 has 24 divisors (see below), whose sum is σ = 3267174176. Its totient is φ = 692886528.

The previous prime is 1625161129. The next prime is 1625161151. The reversal of 1625161132 is 2311615261.

It is a super-2 number, since 2×1625161132² = 5282297409927042848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1625161132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144963 + ... + 155770.

Almost surely, 2^1625161132 is an apocalyptic number.

It is an amenable number.

1625161132 is an abundant number, since it is smaller than the sum of its proper divisors (1642013044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625161132 is a wasteful number, since it uses less digits than its factorization.

1625161132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300937 (or 300935 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1625161132 is about 40313.2872884363. The cubic root of 1625161132 is about 1175.7062015772.

Adding to 1625161132 its reverse (2311615261), we get a palindrome (3936776393).

The spelling of 1625161132 in words is "one billion, six hundred twenty-five million, one hundred sixty-one thousand, one hundred thirty-two".