125520797 has 2 divisors, whose sum is σ = 125520798. Its totient is φ = 125520796.

The previous prime is 125520763. The next prime is 125520839. The reversal of 125520797 is 797025521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 55145476 = 8389^2 + 7426^2 .

It is a cyclic number.

It is not a de Polignac number, because 125520797 - 2⁸ = 125520541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125520797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125520757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62760398 + 62760399.

It is an arithmetic number, because the mean of its divisors is an integer number (62760399).

Almost surely, 2^125520797 is an apocalyptic number.

It is an amenable number.

125520797 is a deficient number, since it is larger than the sum of its proper divisors (1).

125520797 is an equidigital number, since it uses as much as digits as its factorization.

125520797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 125520797 is about 11203.6064282891. The cubic root of 125520797 is about 500.6934338544.

The spelling of 125520797 in words is "one hundred twenty-five million, five hundred twenty thousand, seven hundred ninety-seven".