125209450 has 12 divisors (see below), whose sum is σ = 232889670. Its totient is φ = 50083760.

The previous prime is 125209439. The next prime is 125209459. The reversal of 125209450 is 54902521.

It can be written as a sum of positive squares in 3 ways, for example, as 97950609 + 27258841 = 9897^2 + 5221^2 .

It is not an unprimeable number, because it can be changed into a prime (125209459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252045 + ... + 1252144.

Almost surely, 2^125209450 is an apocalyptic number.

125209450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125209450 is a deficient number, since it is larger than the sum of its proper divisors (107680220).

125209450 is a wasteful number, since it uses less digits than its factorization.

125209450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504201 (or 2504196 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125209450 is about 11189.7028557509. The cubic root of 125209450 is about 500.2791108320.

The spelling of 125209450 in words is "one hundred twenty-five million, two hundred nine thousand, four hundred fifty".