1250005240 has 64 divisors (see below), whose sum is σ = 3248696160. Its totient is φ = 427806720.

The previous prime is 1250005213. The next prime is 1250005243. The reversal of 1250005240 is 425000521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250005243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76077 + ... + 91036.

Almost surely, 2^1250005240 is an apocalyptic number.

1250005240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250005240 is an abundant number, since it is smaller than the sum of its proper divisors (1998690920).

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

1250005240 is a wasteful number, since it uses less digits than its factorization.

1250005240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167152 (or 167148 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1250005240 is about 35355.4131640404. The cubic root of 1250005240 is about 1077.2188502455.

Adding to 1250005240 its reverse (425000521), we get a palindrome (1675005761).

The spelling of 1250005240 in words is "one billion, two hundred fifty million, five thousand, two hundred forty".