1251504422434 has 32 divisors (see below), whose sum is σ = 2370405171456. Its totient is φ = 482860308480.

The previous prime is 1251504422429. The next prime is 1251504422479. The reversal of 1251504422434 is 4342244051521.

It is a junction number, because it is equal to n+sod(n) for n = 1251504422393 and 1251504422402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114308047 + ... + 114318994.

It is an arithmetic number, because the mean of its divisors is an integer number (74075161608).

Almost surely, 2^{1251504422434} is an apocalyptic number.

1251504422434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1251504422434 is a deficient number, since it is larger than the sum of its proper divisors (1118900749022).

1251504422434 is a wasteful number, since it uses less digits than its factorization.

1251504422434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228627090.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 1251504422434 its reverse (4342244051521), we get a palindrome (5593748473955).

The spelling of 1251504422434 in words is "one trillion, two hundred fifty-one billion, five hundred four million, four hundred twenty-two thousand, four hundred thirty-four".