65620125429 has 4 divisors (see below), whose sum is σ = 87493500576. Its totient is φ = 43746750284.

The previous prime is 65620125379. The next prime is 65620125433. The reversal of 65620125429 is 92452102656.

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 65620125429 - 2⁹ = 65620124917 is a prime.

It is a super-2 number, since 2×65620125429² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65620125479) 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, 10936687569 + ... + 10936687574.

It is an arithmetic number, because the mean of its divisors is an integer number (21873375144).

Almost surely, 2^65620125429 is an apocalyptic number.

It is an amenable number.

65620125429 is a deficient number, since it is larger than the sum of its proper divisors (21873375147).

65620125429 is a wasteful number, since it uses less digits than its factorization.

65620125429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21873375146.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 65620125429 in words is "sixty-five billion, six hundred twenty million, one hundred twenty-five thousand, four hundred twenty-nine".