125097919 has 4 divisors (see below), whose sum is σ = 131682040. Its totient is φ = 118513800.

The previous prime is 125097901. The next prime is 125097937. The reversal of 125097919 is 919790521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919790521 = 13 ⋅70753117.

It is an interprime number because it is at equal distance from previous prime (125097901) and next prime (125097937).

It is a cyclic number.

It is not a de Polignac number, because 125097919 - 2⁵ = 125097887 is a prime.

It is a super-2 number, since 2×125097919² = 31298978676261122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125097979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292032 + ... + 3292069.

It is an arithmetic number, because the mean of its divisors is an integer number (32920510).

Almost surely, 2^125097919 is an apocalyptic number.

125097919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125097919 is the 6458-th hex number.

125097919 is a deficient number, since it is larger than the sum of its proper divisors (6584121).

125097919 is an equidigital number, since it uses as much as digits as its factorization.

125097919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584120.

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 125097919 is about 11184.7181010520. The cubic root of 125097919 is about 500.1305245904.

The spelling of 125097919 in words is "one hundred twenty-five million, ninety-seven thousand, nine hundred nineteen".