1250479621 has 2 divisors, whose sum is σ = 1250479622. Its totient is φ = 1250479620.

The previous prime is 1250479613. The next prime is 1250479631. The reversal of 1250479621 is 1269740521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1029511396 + 220968225 = 32086^2 + 14865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250479621 - 2³ = 1250479613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1250479631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625239810 + 625239811.

It is an arithmetic number, because the mean of its divisors is an integer number (625239811).

Almost surely, 2^1250479621 is an apocalyptic number.

It is an amenable number.

1250479621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250479621 is an equidigital number, since it uses as much as digits as its factorization.

1250479621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1250479621 is about 35362.1212740412. The cubic root of 1250479621 is about 1077.3551023478.

The spelling of 1250479621 in words is "one billion, two hundred fifty million, four hundred seventy-nine thousand, six hundred twenty-one".