7861225481 has 8 divisors (see below), whose sum is σ = 7923128640. Its totient is φ = 7799398992.

The previous prime is 7861225447. The next prime is 7861225517. The reversal of 7861225481 is 1845221687.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7861225481 is a prime.

It is a super-2 number, since 2×7861225481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7861225381) 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, 196151 + ... + 232803.

It is an arithmetic number, because the mean of its divisors is an integer number (990391080).

Almost surely, 2^7861225481 is an apocalyptic number.

It is an amenable number.

7861225481 is a deficient number, since it is larger than the sum of its proper divisors (61903159).

7861225481 is a wasteful number, since it uses less digits than its factorization.

7861225481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38335.

The product of its digits is 215040, while the sum is 44.

The square root of 7861225481 is about 88663.5521564527. The cubic root of 7861225481 is about 1988.3679354434.

The spelling of 7861225481 in words is "seven billion, eight hundred sixty-one million, two hundred twenty-five thousand, four hundred eighty-one".