125310221951 has 2 divisors, whose sum is σ = 125310221952. Its totient is φ = 125310221950.

The previous prime is 125310221929. The next prime is 125310221999. The reversal of 125310221951 is 159122013521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125310221951 - 2¹⁰ = 125310220927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125310211951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62655110975 + 62655110976.

It is an arithmetic number, because the mean of its divisors is an integer number (62655110976).

Almost surely, 2^125310221951 is an apocalyptic number.

125310221951 is a deficient number, since it is larger than the sum of its proper divisors (1).

125310221951 is an equidigital number, since it uses as much as digits as its factorization.

125310221951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 125310221951 in words is "one hundred twenty-five billion, three hundred ten million, two hundred twenty-one thousand, nine hundred fifty-one".