125135554 has 16 divisors (see below), whose sum is σ = 193080888. Its totient is φ = 60780672.

The previous prime is 125135497. The next prime is 125135557. The reversal of 125135554 is 455531521.

It can be written as a sum of positive squares in 4 ways, for example, as 121506529 + 3629025 = 11023^2 + 1905^2 .

It is not an unprimeable number, because it can be changed into a prime (125135557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75624 + ... + 77260.

Almost surely, 2^125135554 is an apocalyptic number.

125135554 is a deficient number, since it is larger than the sum of its proper divisors (67945334).

125135554 is a wasteful number, since it uses less digits than its factorization.

125135554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709.

The product of its digits is 15000, while the sum is 31.

The square root of 125135554 is about 11186.4004040621. The cubic root of 125135554 is about 500.1806733731.

The spelling of 125135554 in words is "one hundred twenty-five million, one hundred thirty-five thousand, five hundred fifty-four".