1025561469 has 8 divisors (see below), whose sum is σ = 1370409280. Its totient is φ = 682210656.

The previous prime is 1025561443. The next prime is 1025561477. The reversal of 1025561469 is 9641655201.

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

It is not a de Polignac number, because 1025561469 - 2⁹ = 1025560957 is a prime.

It is a super-2 number, since 2×1025561469² = 2103552653394875922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025561419) 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, 372649 + ... + 375390.

It is an arithmetic number, because the mean of its divisors is an integer number (171301160).

Almost surely, 2^1025561469 is an apocalyptic number.

It is an amenable number.

1025561469 is a deficient number, since it is larger than the sum of its proper divisors (344847811).

1025561469 is an equidigital number, since it uses as much as digits as its factorization.

1025561469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748499.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1025561469 is about 32024.3886592703. The cubic root of 1025561469 is about 1008.4489046382.

The spelling of 1025561469 in words is "one billion, twenty-five million, five hundred sixty-one thousand, four hundred sixty-nine".