1025259426 has 48 divisors (see below), whose sum is σ = 2366267904. Its totient is φ = 319708032.

The previous prime is 1025259421. The next prime is 1025259427. The reversal of 1025259426 is 6249525201.

1025259426 is a `hidden beast` number, since 10 + 2 + 52 + 594 + 2 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1025259421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41071 + ... + 61133.

It is an arithmetic number, because the mean of its divisors is an integer number (49297248).

Almost surely, 2^1025259426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025259426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1183133952).

1025259426 is an abundant number, since it is smaller than the sum of its proper divisors (1341008478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025259426 is a wasteful number, since it uses less digits than its factorization.

1025259426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20255 (or 20252 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1025259426 is about 32019.6724842713. The cubic root of 1025259426 is about 1008.3498938852.

The spelling of 1025259426 in words is "one billion, twenty-five million, two hundred fifty-nine thousand, four hundred twenty-six".