7925069961 has 12 divisors (see below), whose sum is σ = 11524152900. Its totient is φ = 5247920160.

The previous prime is 7925069947. The next prime is 7925069963. The reversal of 7925069961 is 1699605297.

7925069961 is a `hidden beast` number, since 79 + 2 + 506 + 9 + 9 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3871328400 + 4053741561 = 62220^2 + 63669^2 .

It is not a de Polignac number, because 7925069961 - 2⁶ = 7925069897 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7925069898 and 7925069907.

It is not an unprimeable number, because it can be changed into a prime (7925069963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2953570 + ... + 2956251.

It is an arithmetic number, because the mean of its divisors is an integer number (960346075).

Almost surely, 2^7925069961 is an apocalyptic number.

It is an amenable number.

7925069961 is a deficient number, since it is larger than the sum of its proper divisors (3599082939).

7925069961 is a wasteful number, since it uses less digits than its factorization.

7925069961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909976 (or 5909973 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 7925069961 is about 89022.8620130807. The cubic root of 7925069961 is about 1993.7362331757.

The spelling of 7925069961 in words is "seven billion, nine hundred twenty-five million, sixty-nine thousand, nine hundred sixty-one".