125409562 has 8 divisors (see below), whose sum is σ = 188349300. Its totient is φ = 62626464.

The previous prime is 125409541. The next prime is 125409587. The reversal of 125409562 is 265904521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90611361 + 34798201 = 9519^2 + 5899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37137 + ... + 40372.

Almost surely, 2^125409562 is an apocalyptic number.

125409562 is a deficient number, since it is larger than the sum of its proper divisors (62939738).

125409562 is an equidigital number, since it uses as much as digits as its factorization.

125409562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78320.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 125409562 is about 11198.6410782737. The cubic root of 125409562 is about 500.5454873374.

The spelling of 125409562 in words is "one hundred twenty-five million, four hundred nine thousand, five hundred sixty-two".