1025165251 has 8 divisors (see below), whose sum is σ = 1129436208. Its totient is φ = 922740000.

The previous prime is 1025165243. The next prime is 1025165359. The reversal of 1025165251 is 1525615201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025165251 - 2³ = 1025165243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025165201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 460260 + ... + 462481.

It is an arithmetic number, because the mean of its divisors is an integer number (141179526).

Almost surely, 2^1025165251 is an apocalyptic number.

1025165251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1025165251 is a deficient number, since it is larger than the sum of its proper divisors (104270957).

1025165251 is a wasteful number, since it uses less digits than its factorization.

1025165251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922853.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1025165251 is about 32018.2018701863. The cubic root of 1025165251 is about 1008.3190190138.

The spelling of 1025165251 in words is "one billion, twenty-five million, one hundred sixty-five thousand, two hundred fifty-one".