125476777 has 2 divisors, whose sum is σ = 125476778. Its totient is φ = 125476776.

The previous prime is 125476759. The next prime is 125476781. The reversal of 125476777 is 777674521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124121881 + 1354896 = 11141^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 125476777 - 2¹⁹ = 124952489 is a prime.

It is not a weakly prime, because it can be changed into another prime (125476717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62738388 + 62738389.

It is an arithmetic number, because the mean of its divisors is an integer number (62738389).

Almost surely, 2^125476777 is an apocalyptic number.

It is an amenable number.

125476777 is a deficient number, since it is larger than the sum of its proper divisors (1).

125476777 is an equidigital number, since it uses as much as digits as its factorization.

125476777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576240, while the sum is 46.

The square root of 125476777 is about 11201.6417100352. The cubic root of 125476777 is about 500.6348961392.

It can be divided in two parts, 125476 and 777, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 125476777 in words is "one hundred twenty-five million, four hundred seventy-six thousand, seven hundred seventy-seven".