125307953 has 4 divisors (see below), whose sum is σ = 127672308. Its totient is φ = 122943600.

The previous prime is 125307947. The next prime is 125307967. The reversal of 125307953 is 359703521.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 88134544 + 37173409 = 9388^2 + 6097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125307953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125307913) 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, 1182098 + ... + 1182203.

It is an arithmetic number, because the mean of its divisors is an integer number (31918077).

Almost surely, 2^125307953 is an apocalyptic number.

125307953 is the 5984-th centered heptagonal number.

It is an amenable number.

125307953 is a deficient number, since it is larger than the sum of its proper divisors (2364355).

125307953 is an equidigital number, since it uses as much as digits as its factorization.

125307953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364354.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 125307953 is about 11194.1034924642. The cubic root of 125307953 is about 500.4102672695.

The spelling of 125307953 in words is "one hundred twenty-five million, three hundred seven thousand, nine hundred fifty-three".