125762521 has 4 divisors (see below), whose sum is σ = 125953444. Its totient is φ = 125571600.

The previous prime is 125762503. The next prime is 125762561. The reversal of 125762521 is 125267521.

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 61842496 + 63920025 = 7864^2 + 7995^2 .

It is a cyclic number.

It is not a de Polignac number, because 125762521 - 2¹¹ = 125760473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125762561) 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, 94470 + ... + 95791.

It is an arithmetic number, because the mean of its divisors is an integer number (31488361).

Almost surely, 2^125762521 is an apocalyptic number.

It is an amenable number.

125762521 is a deficient number, since it is larger than the sum of its proper divisors (190923).

125762521 is an equidigital number, since it uses as much as digits as its factorization.

125762521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190922.

The product of its digits is 8400, while the sum is 31.

The square root of 125762521 is about 11214.3890159027. The cubic root of 125762521 is about 501.0146343084.

The spelling of 125762521 in words is "one hundred twenty-five million, seven hundred sixty-two thousand, five hundred twenty-one".