1251454252450 has 48 divisors (see below), whose sum is σ = 2386777236480. Its totient is φ = 487901520000.

The previous prime is 1251454252421. The next prime is 1251454252471. The reversal of 1251454252450 is 542524541521.

It is a super-2 number, since 2×1251454252450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1836175 + ... + 2423725.

It is an arithmetic number, because the mean of its divisors is an integer number (49724525760).

Almost surely, 2^{1251454252450} is an apocalyptic number.

1251454252450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251454252450 is a deficient number, since it is larger than the sum of its proper divisors (1135322984030).

1251454252450 is a wasteful number, since it uses less digits than its factorization.

1251454252450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588643 (or 588638 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

Adding to 1251454252450 its reverse (542524541521), we get a palindrome (1793978793971).

The spelling of 1251454252450 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-four million, two hundred fifty-two thousand, four hundred fifty".