1252775001390 has 64 divisors (see below), whose sum is σ = 3321511695360. Its totient is φ = 299858682240.

The previous prime is 1252775001371. The next prime is 1252775001407. The reversal of 1252775001390 is 931005772521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24001069 + ... + 24053208.

It is an arithmetic number, because the mean of its divisors is an integer number (51898620240).

Almost surely, 2^{1252775001390} is an apocalyptic number.

1252775001390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252775001390 is an abundant number, since it is smaller than the sum of its proper divisors (2068736693970).

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

1252775001390 is a wasteful number, since it uses less digits than its factorization.

1252775001390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48054377.

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 1252775001390 in words is "one trillion, two hundred fifty-two billion, seven hundred seventy-five million, one thousand, three hundred ninety".