1051778325 has 48 divisors (see below), whose sum is σ = 1884907136. Its totient is φ = 514425600.

The previous prime is 1051778311. The next prime is 1051778333. The reversal of 1051778325 is 5238771501.

It is not a de Polignac number, because 1051778325 - 2⁷ = 1051778197 is a prime.

It is a super-2 number, since 2×1051778325² = 2212475289879611250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149640 + ... + 156510.

Almost surely, 2^1051778325 is an apocalyptic number.

1051778325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1051778325 is a deficient number, since it is larger than the sum of its proper divisors (833128811).

1051778325 is a wasteful number, since it uses less digits than its factorization.

1051778325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054 (or 7049 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 1051778325 is about 32431.1320338961. The cubic root of 1051778325 is about 1016.9698373228.

It can be divided in two parts, 1051 and 778325, that added together give a triangular number (779376 = T₁₂₄₈).

The spelling of 1051778325 in words is "one billion, fifty-one million, seven hundred seventy-eight thousand, three hundred twenty-five".