1025861533 has 8 divisors (see below), whose sum is σ = 1055871936. Its totient is φ = 996088800.

The previous prime is 1025861513. The next prime is 1025861539. The reversal of 1025861533 is 3351685201.

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

It is not a de Polignac number, because 1025861533 - 2¹³ = 1025853341 is a prime.

It is a super-2 number, since 2×1025861533² = 2104783769778220178, 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 (1025861539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50641 + ... + 67942.

It is an arithmetic number, because the mean of its divisors is an integer number (131983992).

Almost surely, 2^1025861533 is an apocalyptic number.

It is an amenable number.

1025861533 is a deficient number, since it is larger than the sum of its proper divisors (30010403).

1025861533 is a wasteful number, since it uses less digits than its factorization.

1025861533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118835.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1025861533 is about 32029.0732460370. The cubic root of 1025861533 is about 1008.5472474206.

It can be divided in two parts, 1025 and 861533, that multiplied together give a triangular number (883071325 = T₄₂₀₂₅).

The spelling of 1025861533 in words is "one billion, twenty-five million, eight hundred sixty-one thousand, five hundred thirty-three".