1250265390 has 32 divisors (see below), whose sum is σ = 3273422976. Its totient is φ = 303094560.

The previous prime is 1250265347. The next prime is 1250265403. The reversal of 1250265390 is 935620521.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894012 + ... + 1894671.

It is an arithmetic number, because the mean of its divisors is an integer number (102294468).

Almost surely, 2^1250265390 is an apocalyptic number.

1250265390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1250265390 is an abundant number, since it is smaller than the sum of its proper divisors (2023157586).

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

1250265390 is a wasteful number, since it uses less digits than its factorization.

1250265390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788704.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 1250265390 is about 35359.0920415103. The cubic root of 1250265390 is about 1077.2935750110.

The spelling of 1250265390 in words is "one billion, two hundred fifty million, two hundred sixty-five thousand, three hundred ninety".