1250245440 has 84 divisors (see below), whose sum is σ = 4300333284. Its totient is φ = 333398016.

The previous prime is 1250245411. The next prime is 1250245453. The reversal of 1250245440 is 445420521.

It can be written as a sum of positive squares in 2 ways, for example, as 384473664 + 865771776 = 19608^2 + 29424^2 .

It is a super-2 number, since 2×1250245440² = 3126227320481587200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214177 + ... + 219936.

Almost surely, 2^1250245440 is an apocalyptic number.

1250245440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250245440 is an abundant number, since it is smaller than the sum of its proper divisors (3050087844).

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

1250245440 is a wasteful number, since it uses less digits than its factorization.

1250245440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434136 (or 434123 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1250245440 is about 35358.8099347249. The cubic root of 1250245440 is about 1077.2878449952.

Adding to 1250245440 its reverse (445420521), we get a palindrome (1695665961).

The spelling of 1250245440 in words is "one billion, two hundred fifty million, two hundred forty-five thousand, four hundred forty".