125776477 has 2 divisors, whose sum is σ = 125776478. Its totient is φ = 125776476.

The previous prime is 125776463. The next prime is 125776481. The reversal of 125776477 is 774677521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88003161 + 37773316 = 9381^2 + 6146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125776477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125776177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62888238 + 62888239.

It is an arithmetic number, because the mean of its divisors is an integer number (62888239).

Almost surely, 2^125776477 is an apocalyptic number.

It is an amenable number.

125776477 is a deficient number, since it is larger than the sum of its proper divisors (1).

125776477 is an equidigital number, since it uses as much as digits as its factorization.

125776477 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 125776477 is about 11215.0112349476. The cubic root of 125776477 is about 501.0331663309.

It can be divided in two parts, 125776 and 477, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 125776477 in words is "one hundred twenty-five million, seven hundred seventy-six thousand, four hundred seventy-seven".