125027761 has 2 divisors, whose sum is σ = 125027762. Its totient is φ = 125027760.

The previous prime is 125027759. The next prime is 125027767. The reversal of 125027761 is 167720521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101203600 + 23824161 = 10060^2 + 4881^2 .

It is a cyclic number.

It is not a de Polignac number, because 125027761 - 2¹ = 125027759 is a prime.

Together with 125027759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125027767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62513880 + 62513881.

It is an arithmetic number, because the mean of its divisors is an integer number (62513881).

Almost surely, 2^125027761 is an apocalyptic number.

It is an amenable number.

125027761 is a deficient number, since it is larger than the sum of its proper divisors (1).

125027761 is an equidigital number, since it uses as much as digits as its factorization.

125027761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 125027761 is about 11181.5813282380. The cubic root of 125027761 is about 500.0370119268.

The spelling of 125027761 in words is "one hundred twenty-five million, twenty-seven thousand, seven hundred sixty-one".