3525042251421 has 40 divisors (see below), whose sum is σ = 5332895552160. Its totient is φ = 2320238828448.

The previous prime is 3525042251413. The next prime is 3525042251429. The reversal of 3525042251421 is 1241522405253.

3525042251421 is a `hidden beast` number, since 3 + 5 + 2 + 5 + 0 + 4 + 225 + 1 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (3525042251413) and next prime (3525042251429).

It is not a de Polignac number, because 3525042251421 - 2³ = 3525042251413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3525042251429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1793206 + ... + 3204008.

It is an arithmetic number, because the mean of its divisors is an integer number (133322388804).

Almost surely, 2^{3525042251421} is an apocalyptic number.

It is an amenable number.

3525042251421 is a deficient number, since it is larger than the sum of its proper divisors (1807853300739).

3525042251421 is a wasteful number, since it uses less digits than its factorization.

3525042251421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411207 (or 1411198 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 3525042251421 its reverse (1241522405253), we get a palindrome (4766564656674).

The spelling of 3525042251421 in words is "three trillion, five hundred twenty-five billion, forty-two million, two hundred fifty-one thousand, four hundred twenty-one".