1251084045 has 16 divisors (see below), whose sum is σ = 2050558272. Its totient is φ = 650970240.

The previous prime is 1251083993. The next prime is 1251084067. The reversal of 1251084045 is 5404801521.

It is not a de Polignac number, because 1251084045 - 2⁷ = 1251083917 is a prime.

It is a super-2 number, since 2×1251084045² = 3130422575307124050, which contains 22 as substring.

It is a congruent number.

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, 1016527 + ... + 1017756.

It is an arithmetic number, because the mean of its divisors is an integer number (128159892).

Almost surely, 2^1251084045 is an apocalyptic number.

1251084045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1251084045 is a deficient number, since it is larger than the sum of its proper divisors (799474227).

1251084045 is a wasteful number, since it uses less digits than its factorization.

1251084045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034332.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1251084045 is about 35370.6664483439. Note that the first 3 decimals coincide. The cubic root of 1251084045 is about 1077.5286555938.

Adding to 1251084045 its reverse (5404801521), we get a palindrome (6655885566).

The spelling of 1251084045 in words is "one billion, two hundred fifty-one million, eighty-four thousand, forty-five".