125249479 has 2 divisors, whose sum is σ = 125249480. Its totient is φ = 125249478.

The previous prime is 125249461. The next prime is 125249503. The reversal of 125249479 is 974942521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125249479 - 2⁵ = 125249447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125249459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62624739 + 62624740.

It is an arithmetic number, because the mean of its divisors is an integer number (62624740).

Almost surely, 2^125249479 is an apocalyptic number.

125249479 is a deficient number, since it is larger than the sum of its proper divisors (1).

125249479 is an equidigital number, since it uses as much as digits as its factorization.

125249479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 125249479 is about 11191.4913662121. The cubic root of 125249479 is about 500.3324176147.

The spelling of 125249479 in words is "one hundred twenty-five million, two hundred forty-nine thousand, four hundred seventy-nine".