1252860145 has 16 divisors (see below), whose sum is σ = 1550860560. Its totient is φ = 970907904.

The previous prime is 1252860121. The next prime is 1252860149. The reversal of 1252860145 is 5410682521.

It is a happy number.

1252860145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 54523456 + 1198336689 = 7384^2 + 34617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252860145 - 2¹³ = 1252851953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252860145.

It is not an unprimeable number, because it can be changed into a prime (1252860149) 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, 27579 + ... + 57151.

It is an arithmetic number, because the mean of its divisors is an integer number (96928785).

Almost surely, 2^1252860145 is an apocalyptic number.

It is an amenable number.

1252860145 is a deficient number, since it is larger than the sum of its proper divisors (298000415).

1252860145 is a wasteful number, since it uses less digits than its factorization.

1252860145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29844.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 1252860145 is about 35395.7645065056. The cubic root of 1252860145 is about 1078.0383185872.

The spelling of 1252860145 in words is "one billion, two hundred fifty-two million, eight hundred sixty thousand, one hundred forty-five".