2125448521520 has 40 divisors (see below), whose sum is σ = 4967272345056. Its totient is φ = 845774327808.

The previous prime is 2125448521519. The next prime is 2125448521577. The reversal of 2125448521520 is 251258445212.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2125448521520² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68813852 + ... + 68844731.

Almost surely, 2^{2125448521520} is an apocalyptic number.

2125448521520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125448521520 is an abundant number, since it is smaller than the sum of its proper divisors (2841823823536).

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

2125448521520 is a wasteful number, since it uses less digits than its factorization.

2125448521520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137658789 (or 137658783 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 41.

The spelling of 2125448521520 in words is "two trillion, one hundred twenty-five billion, four hundred forty-eight million, five hundred twenty-one thousand, five hundred twenty".