125123334551 has 2 divisors, whose sum is σ = 125123334552. Its totient is φ = 125123334550.

The previous prime is 125123334487. The next prime is 125123334607. The reversal of 125123334551 is 155433321521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125123334551 - 2⁶ = 125123334487 is a prime.

It is a super-2 number, since 2×125123334551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125123331551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62561667275 + 62561667276.

It is an arithmetic number, because the mean of its divisors is an integer number (62561667276).

Almost surely, 2^125123334551 is an apocalyptic number.

125123334551 is a deficient number, since it is larger than the sum of its proper divisors (1).

125123334551 is an equidigital number, since it uses as much as digits as its factorization.

125123334551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 35.

The spelling of 125123334551 in words is "one hundred twenty-five billion, one hundred twenty-three million, three hundred thirty-four thousand, five hundred fifty-one".