125274519 has 36 divisors (see below), whose sum is σ = 194665016. Its totient is φ = 80504928.

The previous prime is 125274517. The next prime is 125274521. The reversal of 125274519 is 915472521.

It is an interprime number because it is at equal distance from previous prime (125274517) and next prime (125274521).

It is not a de Polignac number, because 125274519 - 2¹ = 125274517 is a prime.

It is a super-2 number, since 2×125274519² = 31387410221362722, 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 (125274511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204057 + ... + 204669.

Almost surely, 2^125274519 is an apocalyptic number.

125274519 is a deficient number, since it is larger than the sum of its proper divisors (69390497).

125274519 is an frugal number, since it uses more digits than its factorization.

125274519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 645 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 125274519 is about 11192.6100173284. The cubic root of 125274519 is about 500.3657577107.

The spelling of 125274519 in words is "one hundred twenty-five million, two hundred seventy-four thousand, five hundred nineteen".