635725722401 has 8 divisors (see below), whose sum is σ = 792593108544. Its totient is φ = 495370692720.

The previous prime is 635725722341. The next prime is 635725722433. The reversal of 635725722401 is 104227527536.

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

It is a cyclic number.

It is not a de Polignac number, because 635725722401 - 2¹⁰ = 635725721377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635725722601) 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, 4128089030 + ... + 4128089183.

It is an arithmetic number, because the mean of its divisors is an integer number (99074138568).

Almost surely, 2^635725722401 is an apocalyptic number.

It is an amenable number.

635725722401 is a deficient number, since it is larger than the sum of its proper divisors (156867386143).

635725722401 is a wasteful number, since it uses less digits than its factorization.

635725722401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256178231.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 635725722401 in words is "six hundred thirty-five billion, seven hundred twenty-five million, seven hundred twenty-two thousand, four hundred one".