125525501 has 4 divisors (see below), whose sum is σ = 132909372. Its totient is φ = 118141632.

The previous prime is 125525489. The next prime is 125525531. The reversal of 125525501 is 105525521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105525521 = 199 ⋅530279.

It can be written as a sum of positive squares in 2 ways, for example, as 117202276 + 8323225 = 10826^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 125525501 - 2⁶ = 125525437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125525531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3691910 + ... + 3691943.

It is an arithmetic number, because the mean of its divisors is an integer number (33227343).

Almost surely, 2^125525501 is an apocalyptic number.

It is an amenable number.

125525501 is a deficient number, since it is larger than the sum of its proper divisors (7383871).

125525501 is an equidigital number, since it uses as much as digits as its factorization.

125525501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383870.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 125525501 is about 11203.8163587235. The cubic root of 125525501 is about 500.6996884155.

The spelling of 125525501 in words is "one hundred twenty-five million, five hundred twenty-five thousand, five hundred one".