2125155444 has 12 divisors (see below), whose sum is σ = 4958696064. Its totient is φ = 708385144.

The previous prime is 2125155437. The next prime is 2125155481. The reversal of 2125155444 is 4445515212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2125155444² = 9032571322325674272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88548132 + ... + 88548155.

It is an arithmetic number, because the mean of its divisors is an integer number (413224672).

Almost surely, 2^2125155444 is an apocalyptic number.

It is an amenable number.

2125155444 is an abundant number, since it is smaller than the sum of its proper divisors (2833540620).

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

2125155444 is a wasteful number, since it uses less digits than its factorization.

2125155444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177096294 (or 177096292 counting only the distinct ones).

The product of its digits is 32000, while the sum is 33.

The square root of 2125155444 is about 46099.4082825366. The cubic root of 2125155444 is about 1285.6721428232.

The spelling of 2125155444 in words is "two billion, one hundred twenty-five million, one hundred fifty-five thousand, four hundred forty-four".