1025687349 has 6 divisors (see below), whose sum is σ = 1481548406. Its totient is φ = 683791560.

The previous prime is 1025687347. The next prime is 1025687423. The reversal of 1025687349 is 9437865201.

1025687349 is a `hidden beast` number, since 10 + 2 + 568 + 73 + 4 + 9 = 666.

1025687349 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 only one way, i.e., 969886449 + 55800900 = 31143^2 + 7470^2 .

It is not a de Polignac number, because 1025687349 - 2¹ = 1025687347 is a prime.

It is a Duffinian number.

1025687349 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 (1025687347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56982622 + ... + 56982639.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1025687349 = 2051374698, but 3⋅1025687349 = 3077062047 is not.

Almost surely, 2^1025687349 is an apocalyptic number.

It is an amenable number.

1025687349 is a deficient number, since it is larger than the sum of its proper divisors (455861057).

1025687349 is a wasteful number, since it uses less digits than its factorization.

1025687349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113965267 (or 113965264 counting only the distinct ones).

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

The square root of 1025687349 is about 32026.3539760617. The cubic root of 1025687349 is about 1008.4901628038.

The spelling of 1025687349 in words is "one billion, twenty-five million, six hundred eighty-seven thousand, three hundred forty-nine".