2125542465 has 40 divisors (see below), whose sum is σ = 3839413248. Its totient is φ = 1124940960.

The previous prime is 2125542449. The next prime is 2125542511. The reversal of 2125542465 is 5642455212.

2125542465 is a `hidden beast` number, since 21 + 2 + 554 + 24 + 65 = 666.

It is not a de Polignac number, because 2125542465 - 2⁴ = 2125542449 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33024 + ... + 73086.

Almost surely, 2^2125542465 is an apocalyptic number.

It is an amenable number.

2125542465 is a deficient number, since it is larger than the sum of its proper divisors (1713870783).

2125542465 is a wasteful number, since it uses less digits than its factorization.

2125542465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40211 (or 40202 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 2125542465 is about 46103.6057700480. The cubic root of 2125542465 is about 1285.7501844738.

Adding to 2125542465 its reverse (5642455212), we get a palindrome (7767997677).

The spelling of 2125542465 in words is "two billion, one hundred twenty-five million, five hundred forty-two thousand, four hundred sixty-five".