1252432451 has 4 divisors (see below), whose sum is σ = 1254351072. Its totient is φ = 1250513832.

The previous prime is 1252432439. The next prime is 1252432459. The reversal of 1252432451 is 1542342521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252432451 - 2¹⁸ = 1252170307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252432459) 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, 958331 + ... + 959636.

It is an arithmetic number, because the mean of its divisors is an integer number (313587768).

Almost surely, 2^1252432451 is an apocalyptic number.

1252432451 is a deficient number, since it is larger than the sum of its proper divisors (1918621).

1252432451 is an equidigital number, since it uses as much as digits as its factorization.

1252432451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918620.

The product of its digits is 9600, while the sum is 29.

The square root of 1252432451 is about 35389.7223922426. The cubic root of 1252432451 is about 1077.9156331733.

Adding to 1252432451 its reverse (1542342521), we get a palindrome (2794774972).

The spelling of 1252432451 in words is "one billion, two hundred fifty-two million, four hundred thirty-two thousand, four hundred fifty-one".