125520420299 has 2 divisors, whose sum is σ = 125520420300. Its totient is φ = 125520420298.

The previous prime is 125520420287. The next prime is 125520420367. The reversal of 125520420299 is 992024025521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125520420299 - 2⁴ = 125520420283 is a prime.

It is a super-2 number, since 2×125520420299² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125520420209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62760210149 + 62760210150.

It is an arithmetic number, because the mean of its divisors is an integer number (62760210150).

Almost surely, 2^125520420299 is an apocalyptic number.

125520420299 is a deficient number, since it is larger than the sum of its proper divisors (1).

125520420299 is an equidigital number, since it uses as much as digits as its factorization.

125520420299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 125520420299 in words is "one hundred twenty-five billion, five hundred twenty million, four hundred twenty thousand, two hundred ninety-nine".