3425131521 has 16 divisors (see below), whose sum is σ = 5799164800. Its totient is φ = 1957217904.

The previous prime is 3425131487. The next prime is 3425131547. The reversal of 3425131521 is 1251315243.

3425131521 is a `hidden beast` number, since 3 + 4 + 2 + 5 + 131 + 521 = 666.

It is not a de Polignac number, because 3425131521 - 2⁹ = 3425131009 is a prime.

It is a super-2 number, since 2×3425131521² = 23463051872295546882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3425139521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9061006 + ... + 9061383.

It is an arithmetic number, because the mean of its divisors is an integer number (362447800).

Almost surely, 2^3425131521 is an apocalyptic number.

It is an amenable number.

3425131521 is a deficient number, since it is larger than the sum of its proper divisors (2374033279).

3425131521 is a wasteful number, since it uses less digits than its factorization.

3425131521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18122405 (or 18122399 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 3425131521 is about 58524.6232025461. The cubic root of 3425131521 is about 1507.3904199945.

Adding to 3425131521 its reverse (1251315243), we get a palindrome (4676446764).

It can be divided in two parts, 3 and 425131521, that added together give a palindrome (425131524).

The spelling of 3425131521 in words is "three billion, four hundred twenty-five million, one hundred thirty-one thousand, five hundred twenty-one".