1252431601 has 2 divisors, whose sum is σ = 1252431602. Its totient is φ = 1252431600.

The previous prime is 1252431577. The next prime is 1252431623. The reversal of 1252431601 is 1061342521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251461376 + 970225 = 35376^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252431601 - 2¹¹ = 1252429553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252435601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626215800 + 626215801.

It is an arithmetic number, because the mean of its divisors is an integer number (626215801).

Almost surely, 2^1252431601 is an apocalyptic number.

It is an amenable number.

1252431601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252431601 is an equidigital number, since it uses as much as digits as its factorization.

1252431601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1252431601 is about 35389.7103831043. The cubic root of 1252431601 is about 1077.9153893203.

The spelling of 1252431601 in words is "one billion, two hundred fifty-two million, four hundred thirty-one thousand, six hundred one".