3625465421 has 4 divisors (see below), whose sum is σ = 3750481500. Its totient is φ = 3500449344.

The previous prime is 3625465343. The next prime is 3625465439. The reversal of 3625465421 is 1245645263.

3625465421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1245645263 = 19 ⋅65560277.

It can be written as a sum of positive squares in 2 ways, for example, as 3040309321 + 585156100 = 55139^2 + 24190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3625465421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3625465451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62507996 + ... + 62508053.

It is an arithmetic number, because the mean of its divisors is an integer number (937620375).

Almost surely, 2^3625465421 is an apocalyptic number.

It is an amenable number.

3625465421 is a deficient number, since it is larger than the sum of its proper divisors (125016079).

3625465421 is a wasteful number, since it uses less digits than its factorization.

3625465421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125016078.

The product of its digits is 172800, while the sum is 38.

The square root of 3625465421 is about 60211.8378809350. The cubic root of 3625465421 is about 1536.2241535131.

The spelling of 3625465421 in words is "three billion, six hundred twenty-five million, four hundred sixty-five thousand, four hundred twenty-one".