1250422749 has 6 divisors (see below), whose sum is σ = 1806166206. Its totient is φ = 833615160.

The previous prime is 1250422739. The next prime is 1250422759. The reversal of 1250422749 is 9472240521.

It is an interprime number because it is at equal distance from previous prime (1250422739) and next prime (1250422759).

It can be written as a sum of positive squares in only one way, i.e., 1060479225 + 189943524 = 32565^2 + 13782^2 .

It is not a de Polignac number, because 1250422749 - 2¹¹ = 1250420701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250422729) 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, 69467922 + ... + 69467939.

It is an arithmetic number, because the mean of its divisors is an integer number (301027701).

Almost surely, 2^1250422749 is an apocalyptic number.

It is an amenable number.

1250422749 is a deficient number, since it is larger than the sum of its proper divisors (555743457).

1250422749 is a wasteful number, since it uses less digits than its factorization.

1250422749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138935867 (or 138935864 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1250422749 is about 35361.3171276184. The cubic root of 1250422749 is about 1077.3387693432.

It can be divided in two parts, 12504 and 22749, that added together give a palindrome (35253).

The spelling of 1250422749 in words is "one billion, two hundred fifty million, four hundred twenty-two thousand, seven hundred forty-nine".