1858041025 has 27 divisors (see below), whose sum is σ = 2378129691. Its totient is φ = 1440051840.

The previous prime is 1858041023. The next prime is 1858041043. The reversal of 1858041025 is 5201408581.

The square root of 1858041025 is 43105.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 937768129 + 920272896 = 30623^2 + 30336^2 .

It is not a de Polignac number, because 1858041025 - 2¹ = 1858041023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1858041023) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 7974309 + ... + 7974541.

Almost surely, 2^1858041025 is an apocalyptic number.

1858041025 is the 43105-th square number.

1858041025 is the 21553-rd centered octagonal number.

It is an amenable number.

1858041025 is a deficient number, since it is larger than the sum of its proper divisors (520088666).

1858041025 is an frugal number, since it uses more digits than its factorization.

1858041025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The cubic root of 1858041025 is about 1229.3770448040.

The spelling of 1858041025 in words is "one billion, eight hundred fifty-eight million, forty-one thousand, twenty-five".