1252423404551 has 8 divisors (see below), whose sum is σ = 1371475062144. Its totient is φ = 1134237577720.

The previous prime is 1252423404539. The next prime is 1252423404581. The reversal of 1252423404551 is 1554043242521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252423404551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252423404581) 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, 216454661 + ... + 216460446.

It is an arithmetic number, because the mean of its divisors is an integer number (171434382768).

Almost surely, 2^{1252423404551} is an apocalyptic number.

1252423404551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1252423404551 is a deficient number, since it is larger than the sum of its proper divisors (119051657593).

1252423404551 is a wasteful number, since it uses less digits than its factorization.

1252423404551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432915381.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 1252423404551 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-three million, four hundred four thousand, five hundred fifty-one".