125079961 has 2 divisors, whose sum is σ = 125079962. Its totient is φ = 125079960.

The previous prime is 125079953. The next prime is 125080013. The reversal of 125079961 is 169970521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124545600 + 534361 = 11160^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 125079961 - 2³ = 125079953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125079901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62539980 + 62539981.

It is an arithmetic number, because the mean of its divisors is an integer number (62539981).

Almost surely, 2^125079961 is an apocalyptic number.

It is an amenable number.

125079961 is a deficient number, since it is larger than the sum of its proper divisors (1).

125079961 is an equidigital number, since it uses as much as digits as its factorization.

125079961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 125079961 is about 11183.9152804373. The cubic root of 125079961 is about 500.1065919414.

The spelling of 125079961 in words is "one hundred twenty-five million, seventy-nine thousand, nine hundred sixty-one".