7725206131 has 2 divisors, whose sum is σ = 7725206132. Its totient is φ = 7725206130.

The previous prime is 7725206119. The next prime is 7725206149. The reversal of 7725206131 is 1316025277.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7725206131 - 2¹⁵ = 7725173363 is a prime.

It is a super-2 number, since 2×7725206131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7725206161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862603065 + 3862603066.

It is an arithmetic number, because the mean of its divisors is an integer number (3862603066).

Almost surely, 2^7725206131 is an apocalyptic number.

7725206131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725206131 is an equidigital number, since it uses as much as digits as its factorization.

7725206131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 7725206131 is about 87893.1517867007. The cubic root of 7725206131 is about 1976.8331966651.

The spelling of 7725206131 in words is "seven billion, seven hundred twenty-five million, two hundred six thousand, one hundred thirty-one".