125540425 has 24 divisors (see below), whose sum is σ = 159579072. Its totient is φ = 97944000.

The previous prime is 125540419. The next prime is 125540473. The reversal of 125540425 is 524045521.

It is not a de Polignac number, because 125540425 - 2¹⁹ = 125016137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125540393 and 125540402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189595 + ... + 190255.

It is an arithmetic number, because the mean of its divisors is an integer number (6649128).

Almost surely, 2^125540425 is an apocalyptic number.

It is an amenable number.

125540425 is a deficient number, since it is larger than the sum of its proper divisors (34038647).

125540425 is a wasteful number, since it uses less digits than its factorization.

125540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 125540425 is about 11204.4823619835. The cubic root of 125540425 is about 500.7195307211.

Adding to 125540425 its reverse (524045521), we get a palindrome (649585946).

The spelling of 125540425 in words is "one hundred twenty-five million, five hundred forty thousand, four hundred twenty-five".