125604761 has 2 divisors, whose sum is σ = 125604762. Its totient is φ = 125604760.

The previous prime is 125604757. The next prime is 125604767. The reversal of 125604761 is 167406521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114918400 + 10686361 = 10720^2 + 3269^2 .

It is an emirp because it is prime and its reverse (167406521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125604761 - 2² = 125604757 is a prime.

It is not a weakly prime, because it can be changed into another prime (125604767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62802380 + 62802381.

It is an arithmetic number, because the mean of its divisors is an integer number (62802381).

Almost surely, 2^125604761 is an apocalyptic number.

It is an amenable number.

125604761 is a deficient number, since it is larger than the sum of its proper divisors (1).

125604761 is an equidigital number, since it uses as much as digits as its factorization.

125604761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 125604761 is about 11207.3529881056. The cubic root of 125604761 is about 500.8050510898.

The spelling of 125604761 in words is "one hundred twenty-five million, six hundred four thousand, seven hundred sixty-one".