125311421953 has 2 divisors, whose sum is σ = 125311421954. Its totient is φ = 125311421952.

The previous prime is 125311421929. The next prime is 125311421959. The reversal of 125311421953 is 359124113521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109129801104 + 16181620849 = 330348^2 + 127207^2 .

It is a cyclic number.

It is not a de Polignac number, because 125311421953 - 2³³ = 116721487361 is a prime.

It is not a weakly prime, because it can be changed into another prime (125311421959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62655710976 + 62655710977.

It is an arithmetic number, because the mean of its divisors is an integer number (62655710977).

Almost surely, 2^125311421953 is an apocalyptic number.

It is an amenable number.

125311421953 is a deficient number, since it is larger than the sum of its proper divisors (1).

125311421953 is an equidigital number, since it uses as much as digits as its factorization.

125311421953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The spelling of 125311421953 in words is "one hundred twenty-five billion, three hundred eleven million, four hundred twenty-one thousand, nine hundred fifty-three".