3642420825 has 24 divisors (see below), whose sum is σ = 6691263200. Its totient is φ = 1942624080.

The previous prime is 3642420791. The next prime is 3642420839. The reversal of 3642420825 is 5280242463.

3642420825 is a `hidden beast` number, since 3 + 6 + 424 + 208 + 25 = 666.

It is not a de Polignac number, because 3642420825 - 2⁸ = 3642420569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3642420825.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2697415 + ... + 2698764.

Almost surely, 2^3642420825 is an apocalyptic number.

It is an amenable number.

3642420825 is a deficient number, since it is larger than the sum of its proper divisors (3048842375).

3642420825 is a wasteful number, since it uses less digits than its factorization.

3642420825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396198 (or 5396187 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 3642420825 is about 60352.4715732504. The cubic root of 3642420825 is about 1538.6152764650.

The spelling of 3642420825 in words is "three billion, six hundred forty-two million, four hundred twenty thousand, eight hundred twenty-five".