3500625420 has 36 divisors (see below), whose sum is σ = 10618564320. Its totient is φ = 933500064.

The previous prime is 3500625407. The next prime is 3500625421. The reversal of 3500625420 is 245260053.

3500625420 is a `hidden beast` number, since 35 + 0 + 0 + 625 + 4 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (3500625421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9723780 + ... + 9724139.

It is an arithmetic number, because the mean of its divisors is an integer number (294960120).

Almost surely, 2^3500625420 is an apocalyptic number.

3500625420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3500625420 is an abundant number, since it is smaller than the sum of its proper divisors (7117938900).

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

3500625420 is a wasteful number, since it uses less digits than its factorization.

3500625420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19447934 (or 19447929 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3500625420 is about 59166.0833586270. The cubic root of 3500625420 is about 1518.3849159553.

Adding to 3500625420 its reverse (245260053), we get a palindrome (3745885473).

The spelling of 3500625420 in words is "three billion, five hundred million, six hundred twenty-five thousand, four hundred twenty".