1252125601 has 4 divisors (see below), whose sum is σ = 1259043604. Its totient is φ = 1245207600.

The previous prime is 1252125587. The next prime is 1252125647. The reversal of 1252125601 is 1065212521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1065212521 = 937 ⋅1136833.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 1231659025 = 4524^2 + 35095^2 .

It is not a de Polignac number, because 1252125601 - 2⁵ = 1252125569 is a prime.

It is a super-2 number, since 2×1252125601² = 3135637041359222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252125001) 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, 3458730 + ... + 3459091.

It is an arithmetic number, because the mean of its divisors is an integer number (314760901).

Almost surely, 2^1252125601 is an apocalyptic number.

It is an amenable number.

1252125601 is a deficient number, since it is larger than the sum of its proper divisors (6918003).

1252125601 is an equidigital number, since it uses as much as digits as its factorization.

1252125601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918002.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1252125601 is about 35385.3868284635. The cubic root of 1252125601 is about 1077.8275950446.

The spelling of 1252125601 in words is "one billion, two hundred fifty-two million, one hundred twenty-five thousand, six hundred one".