1025905263 has 4 divisors (see below), whose sum is σ = 1367873688. Its totient is φ = 683936840.

The previous prime is 1025905249. The next prime is 1025905267. The reversal of 1025905263 is 3625095201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025905263 - 2⁸ = 1025905007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025905267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170984208 + ... + 170984213.

It is an arithmetic number, because the mean of its divisors is an integer number (341968422).

Almost surely, 2^1025905263 is an apocalyptic number.

1025905263 is a deficient number, since it is larger than the sum of its proper divisors (341968425).

1025905263 is an equidigital number, since it uses as much as digits as its factorization.

1025905263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341968424.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 1025905263 is about 32029.7558997879. The cubic root of 1025905263 is about 1008.5615778615.

The spelling of 1025905263 in words is "one billion, twenty-five million, nine hundred five thousand, two hundred sixty-three".