642114525 has 24 divisors (see below), whose sum is σ = 1143294880. Its totient is φ = 316117440.

The previous prime is 642114521. The next prime is 642114527. The reversal of 642114525 is 525411246.

It is not a de Polignac number, because 642114525 - 2² = 642114521 is a prime.

It is a super-2 number, since 2×642114525² = 824622126431951250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642114492 and 642114501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642114521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328315 + ... + 330264.

Almost surely, 2^642114525 is an apocalyptic number.

642114525 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

642114525 is a deficient number, since it is larger than the sum of its proper divisors (501180355).

642114525 is a wasteful number, since it uses less digits than its factorization.

642114525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658605 (or 658600 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 642114525 is about 25339.9787884678. The cubic root of 642114525 is about 862.7219172719.

The spelling of 642114525 in words is "six hundred forty-two million, one hundred fourteen thousand, five hundred twenty-five".