1258750261628 has 6 divisors (see below), whose sum is σ = 2202812957856. Its totient is φ = 629375130812.

The previous prime is 1258750261627. The next prime is 1258750261669. The reversal of 1258750261628 is 8261620578521.

It is a happy number.

It is a super-2 number, since 2×1258750261628² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1258750261628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258750261627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157343782700 + ... + 157343782707.

It is an arithmetic number, because the mean of its divisors is an integer number (367135492976).

Almost surely, 2^{1258750261628} is an apocalyptic number.

It is an amenable number.

1258750261628 is a deficient number, since it is larger than the sum of its proper divisors (944062696228).

1258750261628 is a wasteful number, since it uses less digits than its factorization.

1258750261628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314687565411 (or 314687565409 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 1258750261628 in words is "one trillion, two hundred fifty-eight billion, seven hundred fifty million, two hundred sixty-one thousand, six hundred twenty-eight".