4025232521 has 4 divisors (see below), whose sum is σ = 4026492432. Its totient is φ = 4023972612.

The previous prime is 4025232469. The next prime is 4025232577. The reversal of 4025232521 is 1252325204.

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 4025232521 - 2²⁶ = 3958123657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4025232121) 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, 625151 + ... + 631556.

It is an arithmetic number, because the mean of its divisors is an integer number (1006623108).

Almost surely, 2^4025232521 is an apocalyptic number.

It is an amenable number.

4025232521 is a deficient number, since it is larger than the sum of its proper divisors (1259911).

4025232521 is a wasteful number, since it uses less digits than its factorization.

4025232521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259910.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 4025232521 is about 63444.7201979802. The cubic root of 4025232521 is about 1590.7319021414.

Adding to 4025232521 its reverse (1252325204), we get a palindrome (5277557725).

The spelling of 4025232521 in words is "four billion, twenty-five million, two hundred thirty-two thousand, five hundred twenty-one".