125422643 has 2 divisors, whose sum is σ = 125422644. Its totient is φ = 125422642.

The previous prime is 125422639. The next prime is 125422663. The reversal of 125422643 is 346224521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125422643 - 2² = 125422639 is a prime.

It is not a weakly prime, because it can be changed into another prime (125422663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62711321 + 62711322.

It is an arithmetic number, because the mean of its divisors is an integer number (62711322).

Almost surely, 2^125422643 is an apocalyptic number.

125422643 is a deficient number, since it is larger than the sum of its proper divisors (1).

125422643 is an equidigital number, since it uses as much as digits as its factorization.

125422643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 125422643 is about 11199.2251071224. The cubic root of 125422643 is about 500.5628900717.

The spelling of 125422643 in words is "one hundred twenty-five million, four hundred twenty-two thousand, six hundred forty-three".