1252430622551 has 4 divisors (see below), whose sum is σ = 1254493935552. Its totient is φ = 1250367309552.

The previous prime is 1252430622511. The next prime is 1252430622557. The reversal of 1252430622551 is 1552260342521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252430622551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252430622557) 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, 1031655590 + ... + 1031656803.

It is an arithmetic number, because the mean of its divisors is an integer number (313623483888).

Almost surely, 2^{1252430622551} is an apocalyptic number.

1252430622551 is a deficient number, since it is larger than the sum of its proper divisors (2063313001).

1252430622551 is an equidigital number, since it uses as much as digits as its factorization.

1252430622551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063313000.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1252430622551 in words is "one trillion, two hundred fifty-two billion, four hundred thirty million, six hundred twenty-two thousand, five hundred fifty-one".