6625635157 has 4 divisors (see below), whose sum is σ = 6640728160. Its totient is φ = 6610542156.

The previous prime is 6625635119. The next prime is 6625635161. The reversal of 6625635157 is 7515365266.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7515365266 = 2 ⋅3757682633.

It is a cyclic number.

It is not a de Polignac number, because 6625635157 - 2¹¹ = 6625633109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625635557) 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, 7545843 + ... + 7546720.

It is an arithmetic number, because the mean of its divisors is an integer number (1660182040).

Almost surely, 2^6625635157 is an apocalyptic number.

It is an amenable number.

6625635157 is a deficient number, since it is larger than the sum of its proper divisors (15093003).

6625635157 is a wasteful number, since it uses less digits than its factorization.

6625635157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093002.

The product of its digits is 1134000, while the sum is 46.

The square root of 6625635157 is about 81398.0046254206. The cubic root of 6625635157 is about 1878.2028961030.

The spelling of 6625635157 in words is "six billion, six hundred twenty-five million, six hundred thirty-five thousand, one hundred fifty-seven".