2125420250420 has 12 divisors (see below), whose sum is σ = 4463382525924. Its totient is φ = 850168100160.

The previous prime is 2125420250413. The next prime is 2125420250449. The reversal of 2125420250420 is 240520245212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 976725030436 + 1148695219984 = 988294^2 + 1071772^2 .

It is a super-2 number, since 2×2125420250420² (a number of 25 digits) 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, 53135506241 + ... + 53135506280.

It is an arithmetic number, because the mean of its divisors is an integer number (371948543827).

Almost surely, 2^{2125420250420} is an apocalyptic number.

2125420250420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125420250420 is an abundant number, since it is smaller than the sum of its proper divisors (2337962275504).

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

2125420250420 is a wasteful number, since it uses less digits than its factorization.

2125420250420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106271012530 (or 106271012528 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 2125420250420 its reverse (240520245212), we get a palindrome (2365940495632).

The spelling of 2125420250420 in words is "two trillion, one hundred twenty-five billion, four hundred twenty million, two hundred fifty thousand, four hundred twenty".