125209534 has 4 divisors (see below), whose sum is σ = 187814304. Its totient is φ = 62604766.

The previous prime is 125209529. The next prime is 125209597. The reversal of 125209534 is 435902521.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 125209496 and 125209505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31302382 + ... + 31302385.

It is an arithmetic number, because the mean of its divisors is an integer number (46953576).

Almost surely, 2^125209534 is an apocalyptic number.

125209534 is a deficient number, since it is larger than the sum of its proper divisors (62604770).

125209534 is an equidigital number, since it uses as much as digits as its factorization.

125209534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62604769.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 125209534 is about 11189.7066092012. The cubic root of 125209534 is about 500.2792227070.

The spelling of 125209534 in words is "one hundred twenty-five million, two hundred nine thousand, five hundred thirty-four".