1025867349 has 30 divisors (see below), whose sum is σ = 1659440706. Its totient is φ = 631294560.

The previous prime is 1025867347. The next prime is 1025867357. The reversal of 1025867349 is 9437685201.

1025867349 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 34751025 + 991116324 = 5895^2 + 31482^2 .

It is not a de Polignac number, because 1025867349 - 2¹ = 1025867347 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

1025867349 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025867347) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 23782 + ... + 51159.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1025867349 = 2051734698, but 3⋅1025867349 = 3077602047 is not.

Almost surely, 2^1025867349 is an apocalyptic number.

It is an amenable number.

1025867349 is a deficient number, since it is larger than the sum of its proper divisors (633573357).

1025867349 is an equidigital number, since it uses as much as digits as its factorization.

1025867349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74979 (or 74957 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1025867349 is about 32029.1640384197. The cubic root of 1025867349 is about 1008.5491533632.

The spelling of 1025867349 in words is "one billion, twenty-five million, eight hundred sixty-seven thousand, three hundred forty-nine".