125262889 has 2 divisors, whose sum is σ = 125262890. Its totient is φ = 125262888.

The previous prime is 125262887. The next prime is 125262901. The reversal of 125262889 is 988262521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125260864 + 2025 = 11192^2 + 45^2 .

It is an emirp because it is prime and its reverse (988262521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125262889 - 2¹ = 125262887 is a prime.

Together with 125262887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125262887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62631444 + 62631445.

It is an arithmetic number, because the mean of its divisors is an integer number (62631445).

Almost surely, 2^125262889 is an apocalyptic number.

It is an amenable number.

125262889 is a deficient number, since it is larger than the sum of its proper divisors (1).

125262889 is an equidigital number, since it uses as much as digits as its factorization.

125262889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 125262889 is about 11192.0904660390. The cubic root of 125262889 is about 500.3502732267.

The spelling of 125262889 in words is "one hundred twenty-five million, two hundred sixty-two thousand, eight hundred eighty-nine".