125506490 has 16 divisors (see below), whose sum is σ = 233702280. Its totient is φ = 48471360.

The previous prime is 125506481. The next prime is 125506543. The reversal of 125506490 is 94605521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 94848121 + 30658369 = 9739^2 + 5537^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 216101 + ... + 216680.

Almost surely, 2^125506490 is an apocalyptic number.

125506490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125506490 is a deficient number, since it is larger than the sum of its proper divisors (108195790).

125506490 is a wasteful number, since it uses less digits than its factorization.

125506490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432817.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 125506490 is about 11202.9679103352. The cubic root of 125506490 is about 500.6744099335.

The spelling of 125506490 in words is "one hundred twenty-five million, five hundred six thousand, four hundred ninety".