4025415021 has 4 divisors (see below), whose sum is σ = 5367220032. Its totient is φ = 2683610012.

The previous prime is 4025415019. The next prime is 4025415061. The reversal of 4025415021 is 1205145204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4025415021 - 2¹ = 4025415019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4025414982 and 4025415000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025415001) 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, 670902501 + ... + 670902506.

It is an arithmetic number, because the mean of its divisors is an integer number (1341805008).

Almost surely, 2^4025415021 is an apocalyptic number.

It is an amenable number.

4025415021 is a deficient number, since it is larger than the sum of its proper divisors (1341805011).

4025415021 is a wasteful number, since it uses less digits than its factorization.

4025415021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341805010.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4025415021 is about 63446.1584416267. The cubic root of 4025415021 is about 1590.7559425070.

The spelling of 4025415021 in words is "four billion, twenty-five million, four hundred fifteen thousand, twenty-one".