1252425121 has 8 divisors (see below), whose sum is σ = 1280482560. Its totient is φ = 1224426528.

The previous prime is 1252425113. The next prime is 1252425131. The reversal of 1252425121 is 1215242521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252425121 - 2³ = 1252425113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252425131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29820 + ... + 58258.

It is an arithmetic number, because the mean of its divisors is an integer number (160060320).

Almost surely, 2^1252425121 is an apocalyptic number.

It is an amenable number.

1252425121 is a deficient number, since it is larger than the sum of its proper divisors (28057439).

1252425121 is an equidigital number, since it uses as much as digits as its factorization.

1252425121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423.

The product of its digits is 1600, while the sum is 25.

The square root of 1252425121 is about 35389.6188309510. The cubic root of 1252425121 is about 1077.9135302956.

Adding to 1252425121 its reverse (1215242521), we get a palindrome (2467667642).

The spelling of 1252425121 in words is "one billion, two hundred fifty-two million, four hundred twenty-five thousand, one hundred twenty-one".