65221425501 has 8 divisors (see below), whose sum is σ = 86963217120. Its totient is φ = 43480292112.

The previous prime is 65221425461. The next prime is 65221425527. The reversal of 65221425501 is 10552412256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65221425501 - 2¹¹ = 65221423453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65221425301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155670 + ... + 393288.

It is an arithmetic number, because the mean of its divisors is an integer number (10870402140).

Almost surely, 2^65221425501 is an apocalyptic number.

It is an amenable number.

65221425501 is a deficient number, since it is larger than the sum of its proper divisors (21741791619).

65221425501 is a wasteful number, since it uses less digits than its factorization.

65221425501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329115.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 65221425501 its reverse (10552412256), we get a palindrome (75773837757).

The spelling of 65221425501 in words is "sixty-five billion, two hundred twenty-one million, four hundred twenty-five thousand, five hundred one".