125720377 has 2 divisors, whose sum is σ = 125720378. Its totient is φ = 125720376.

The previous prime is 125720351. The next prime is 125720383. The reversal of 125720377 is 773027521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125686521 + 33856 = 11211^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 125720377 - 2¹⁹ = 125196089 is a prime.

It is a super-2 number, since 2×125720377² = 31611226386044258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125720677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62860188 + 62860189.

It is an arithmetic number, because the mean of its divisors is an integer number (62860189).

Almost surely, 2^125720377 is an apocalyptic number.

It is an amenable number.

125720377 is a deficient number, since it is larger than the sum of its proper divisors (1).

125720377 is an equidigital number, since it uses as much as digits as its factorization.

125720377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 125720377 is about 11212.5098439199. The cubic root of 125720377 is about 500.9586634208.

Adding to 125720377 its reverse (773027521), we get a palindrome (898747898).

The spelling of 125720377 in words is "one hundred twenty-five million, seven hundred twenty thousand, three hundred seventy-seven".